Simple Lithology

Search Results

anthracite / anthrazit
alt label
High rank coal more like this
definition Coal that has vitrinite mean random reflectance greater than 2.0% (determined in conformance with ISO 7404-5). Less than 12-14 percent volatiles (dry, ash free), greater than 91 percent fixed carbon (dry, ash free basis). The highest rank coal; very hard, glossy, black, with semimetallic luster, semi conchoidal fracture. more like this
source Economic commission for Europe, committee on Sustainable Energy- United Nations (ECE-UN), 1998, International Classification of in-Seam Coals: Energy 19, 41 pp; see also Neuendorf et al. 2005; http://en.wikipedia.org/wiki/Coal#Types_of_coal; Eberhard Lindner; Chemie für Ingenieure; Lindner Verlag Karlsruhe, S. 258 more like this
type
Resource
Concept
broader coal
in scheme simplelithology
arenit / arenite
definition Clastic sandstone that contains less than 10 percent matrix. Matrix is mud-size silicate minerals (clay, feldspar, quartz, rock fragments, and alteration products) of detrital or diagenetic nature. more like this
source Pettijohn, Potter, Siever, 1972, Sand and Sandstone: New York, Springer Verlag, 681 p. more like this
type
Resource
Concept
broader clastic sandstone
narrower arenite
in scheme simplelithology
glaucophane lawsonite epidote metamorphic rock / glaukophanschiefer
alt label
blauschiefer more like this
definition A metamorphic rock of roughly basaltic composition, defined by the presence of glaucophane with lawsonite or epidote. Other minerals that may be present include jadeite, albite, chlorite, garnet, and muscovite (phengitic white mica). Typically fine-grained, dark colored. Category for rocks commonly referred to as blueschist. more like this
example
blueschist more like this
glaucophanite more like this
note Fabric is weakly developed in this rock in many cases, so the fabric categories 'foliated metamorphic rock, 'schist' or 'granofels' may apply. more like this
source This vocabulary more like this
type
Resource
Concept
broader metamorphic rock
narrower
amphibolite
glaucophane lawsonite epidote metamorphic rock
in scheme simplelithology
coal / kohle
definition A consolidated organic sedimentary material having less than 75% moisture. This category includes low, medium, and high rank coals according to International Classification of In-Seam Coal (United Nations, 1998), thus including lignite. Sapropelic coal is not distinguished in this category from humic coals. Formed from the compaction or induration of variously altered plant remains similar to those of peaty deposits. more like this
narrower anthracite coal
bituminous coal
lignite
broader coal
source Economic commission for Europe, committee on Sustainable Energy- United Nations (ECE-UN), 1998, International Classification of in-Seam Coals: Energy 19, 41 pp. more like this
type
Resource
Concept
broader organic rich sedimentary rock
narrower coal
in scheme simplelithology
tuffit / tuffite
definition Rock consists of more than 50 percent particles of indeterminate pyroclastic or epiclastic origin and less than 75 percent particles of clearly pyroclastic origin. commonly the rock is laminated or exhibits size grading. (based on LeMaitre et al. 2002; Murawski and Meyer 1998). more like this
example volcaniclastic sedimentary rock more like this
note In practice, it is likely that any rock for which there is suspicion that it may consist of redeposited pyroclastic material, usually based on sedimentary structures, irrespective of the presence or percentage of clearly epiclastic particles, would be called a tuffite. 50 percent cutoff with epiclastic rock is in contrast with LeMaitre et al., but is used for consistentency with other sedimentary rock categories following the pattern that the rock name reflects the predominant constituent. more like this
source LeMaitre et al. 2002; Murawski and Meyer 1998 more like this
type
Resource
Concept
broader rock
narrower
aphanite
tuffite
in scheme simplelithology
acidic igneous material
definition Igneous material with more than 63 percent SiO2. more like this
source after LeMaitre et al. 2002 more like this
type
Resource
Concept
broader igneous material
narrower
acidic igneous material
basic igneous material
in scheme simplelithology
narrower acidic igneous rock
acidic igneous rock
broader acidic igneous material
igneous rock
narrower
acidic igneous rock
basic igneous rock
definition Igneous rock with more than 63 percent SiO2. more like this
example siliceous igneous rock more like this
narrower dacite
broader acidic igneous rock
granitoid
broader acidic igneous rock
narrower alkali feldspar granite
quartz rich igneous rock
broader acidic igneous rock
rhyolitoid
broader acidic igneous rock
narrower alkali feldspar rhyolite
source after LeMaitre et al. 2002 more like this
type
Resource
Concept
in scheme simplelithology
alkali feldspar granite
definition Granitic rock that has a plagioclase to total feldspar ratio less than 0.1. QAPF field 2. more like this
example
alaskite more like this
peralkaline granite more like this
source LeMaitre et al. 2002 more like this
type
Resource
Concept
broader granitoid
in scheme simplelithology
alkali feldspar rhyolite
definition Rhyolitoid in which the ratio of plagioclase to total feldspar is less than 0.1. QAPF field 2. more like this
example
alkali feldspar liparite more like this
peralkaline rhyolite more like this
source LeMaitre et al. 2002 more like this
type
Resource
Concept
broader rhyolitoid
in scheme simplelithology
alkali feldspar syenite
definition Alkali feldspar syenitic rock that contains 0-5 percent quartz and no feldspathoid in the QAPF fraction. QAPF field 6. more like this
source LeMaitre et al. 2002 more like this
type
Resource
Concept
broader alkali feldspar syenitic rock
in scheme simplelithology
alkali feldspar syenitic rock
definition Syenitoid with a plagioclase to total feldspar ratio of less than 0.1. QAPF fields 6, 6*, and 6'. more like this
narrower alkali feldspar syenite
foid bearing alkali feldspar syenite
broader alkali feldspar syenitic rock
quartz alkali feldspar syenite
broader alkali feldspar syenitic rock
source LeMaitre et al. 2002 more like this
type
Resource
Concept
broader syenitoid
narrower alkali feldspar syenitic rock
in scheme simplelithology
alkali feldspar trachyte
definition Trachytoid that has a plagioclase to total feldspar ratio less than 0.1, between 0 and 5 percent quartz in the QAPF fraction, and no feldspathoid minerals. QAPF field 6. more like this
source LeMaitre et al. 2002 more like this
type
Resource
Concept
broader alkali feldspar trachytic rock
in scheme simplelithology
alkali feldspar trachytic rock
definition Trachytoid that has a plagioclase to total feldspar ratio less than 0.1. QAPF fields 6, 6', and 6*. more like this
narrower alkali feldspar trachyte
foid bearing alkali feldspar trachyte
broader alkali feldspar trachytic rock
quartz alkali feldspar trachyte
broader alkali feldspar trachytic rock
source LeMaitre et al. 2002 more like this
type
Resource
Concept
broader trachytoid
narrower alkali feldspar trachytic rock
in scheme simplelithology
alkali olivine basalt
definition Alkali olivine basalt is silica-undersaturated, characterized by the absence of orthopyroxene, absence of quartz, presence of olivine, and typically contains some feldspathoid mineral, alkali feldspar or phlogopite in the groundmass. Feldspar phenocrysts typically are labradorite to andesine in composition. Augite is rich in titanium compared to augite in tholeiitic basalt. Alkali olivine basalt is relatively rich in sodium. more like this
note The definition of tholeiite and alkali basalt here are more prescriptive than those found in most reference authorities. This is to actually provide some descriptive criteria to allow assignment of rocks on a hand sample basis to the tholeiite or alkali basalt categories if detailed petrographic or chemical data are available. more like this
source http://en.wikipedia.org/wiki/Basalt; Carmichael, I.S. Turner, F.J., Verhoogen, John, 1974, Igneous petrology: New York, McGraw HIll Book Co., p.42-43. more like this
type
Resource
Concept
broader basalt
in scheme simplelithology
amphibolite
definition Metamorphic rock mainly consisting of green, brown or black amphibole and plagioclase (including albite), which combined form 75 percent or more of the rock, and both of which are present as major constituents. The amphibole constitutes 50 percent or more of the total mafic constituents and is present in an amount of 30 percent or more; other common minerals include quartz, clinopyroxene, garnet, epidote-group minerals, biotite, titanite and scapolite. more like this
source Coutinho et al. 2007, IUGS SCMR chapter 8 (http://www.bgs.ac.uk/SCMR/) more like this
type
Resource
Concept
broader metamorphic rock
in scheme simplelithology
andesite
broader fine grained igneous rock
narrower
andesite
basalt
intermediate composition igneous rock
narrower andesite
definition Fine-grained igneous rock with less than 20 percent quartz and less than 10 percent feldspathoid minerals in the QAPF fraction, in which the ratio of plagioclase to total feldspar is greater 0.65. Includes rocks defined modally in QAPF fields 9 and 10 or chemically in TAS field O2 as andesite. Basalt and andesite, which share the same QAPF fields, are distinguished chemically based on silica content, with basalt defined to contain less than 52 weight percent silica. If chemical data are not available, the color index is used to distinguish the categories, with basalt defined to contain greater than 35 percent mafic minerals by volume or greater than 40 percent mafic minerals by weight. Typically consists of plagioclase (frequently zoned from labradorite to oligoclase), pyroxene, hornblende and/or biotite. Fine grained equivalent of dioritic rock. more like this
example
basaltic andesite more like this
leuco-basalt more like this
mela-andesite more like this
note Note the mela-andesite and leuco-basalt categories are not recommended in this system. If chemical analytical data are available to constrain the silica content, the basalt or andesite category should be used. more like this
source after LeMaitre et al. 2002 more like this
type
Resource
Concept
in scheme simplelithology
narrower boninite
anorthosite
definition Anorthositic rock that contains between 0 and 5 percent quartz and no feldspathoid mineral in the QAPF fraction. QAPF field 10. more like this
source LeMaitre et al. 2002 more like this
type
Resource
Concept
broader anorthositic rock
in scheme simplelithology
anorthositic rock
definition Leucocratic phaneritic crystalline igneous rock consisting essentially of plagioclase, often with small amounts of pyroxene. By definition, colour index M is less than 10, and plagiclase to total feldspar ratio is greater than 0.9. Less than 20 percent quartz and less than 10 percent feldspathoid in the QAPF fraction. QAPF field 10, 10*, and 10'. more like this
narrower anorthosite
foid bearing anorthosite
broader anorthositic rock
quartz anorthosite
broader anorthositic rock
note Anorthositic rock term invented to label the combined QAPF fields 10, 10*, and 10', in order to construct hierarchy in this vocabulary. more like this
source LeMaitre et al. 2002; This vocabulary more like this
type
Resource
Concept
broader phaneritic igneous rock
narrower
anorthositic rock
aplite
in scheme simplelithology
anthropogenic material
definition Material known to have artificial (human-related) origin; insufficient information to classify in more detail. more like this
source This vocabulary more like this
type
Resource
Concept
broader compound material
narrower
anthropogenic material
breccia
in scheme simplelithology
narrower anthropogenic unconsolidated material
anthropogenic unconsolidated material
broader anthropogenic material
unconsolidated material
narrower anthropogenic unconsolidated material
definition Unconsolidated material known to have artificial (human-related) origin. more like this
source This vocabulary more like this
type
Resource
Concept
in scheme simplelithology
aphanite
definition Rock that is too fine grained to categorize in more detail. more like this
source This vocabulary more like this
type
Resource
Concept
broader rock
in scheme simplelithology
aplite
definition Light coloured crystalline rock, characterized by a fine grained allotriomorphic-granular (aplitic, saccharoidal or xenomorphic) texture; typically granitic composition, consisting of quartz, alkali feldspar and sodic plagioclase. more like this
source Neuendorf et al. 2005 more like this
type
Resource
Concept
broader phaneritic igneous rock
in scheme simplelithology
ash and lapilli
definition Tephra in which less than 25 percent of fragments are greater than 64 mm in longest dimension more like this
source Schmid 1981; LeMaitre et al. 2002 more like this
type
Resource
Concept
broader tephra
narrower
ash and lapilli
ash breccia bomb or block tephra
in scheme simplelithology
ash breccia bomb or block tephra
definition Tephra in which more than 25 percent of particles are greater than 64 mm in largest dimension. Includes ash breccia, bomb tephra and block tephra of Gillespie and Styles (1999) more like this
source Schmid 1981; LeMaitre et al. 2002 more like this
type
Resource
Concept
broader tephra
in scheme simplelithology
ash tuff lapillistone and lapilli tuff
definition Pyroclastic rock in which less than 25 percent of rock by volume are more than 64 mm in longest diameter. Includes tuff, lapilli tuff, and lapillistone. more like this
source Schmid 1981; LeMaitre et al. 2002 more like this
type
Resource
Concept
broader pyroclastic rock
narrower ash tuff lapillistone and lapilli tuff
in scheme simplelithology
basalt
broader
basic igneous rock
fine grained igneous rock
definition Fine-grained or porphyritic igneous rock with less than 20 percent quartz, and less than 10 percent feldspathoid minerals, in which the ratio of plagioclase to total feldspar is greater 0.65. Typically composed of calcic plagioclase and clinopyroxene; phenocrysts typically include one or more of calcic plagioclase, clinopyroxene, orthopyroxene, and olivine. Includes rocks defined modally in QAPF fields 9 and 10 or chemically in TAS field B as basalt. Basalt and andesite are distinguished chemically based on silica content, with basalt defined to contain less than 52 weight percent silica. If chemical data are not available, the color index is used to distinguish the categories, with basalt defined to contain greater than 35 percent mafic minerals by volume or greater than 40 percent mafic minerals by weight. more like this
example
leuco-basalt more like this
mela-andesite more like this
picrite more like this
picrobasalt more like this
narrower alkali olivine basalt
tholeiitic basalt
broader basalt
source after LeMaitre et al. 2002 more like this
type
Resource
Concept
in scheme simplelithology
basanite
definition Tephritoid that has a plagioclase to total feldspar ratio greater than 0.9, and contains more than 10 percent normative (CIPW) olivine. more like this
source LeMaitre et al. 2002 more like this
type
Resource
Concept
broader tephritoid
narrower basanite
in scheme simplelithology
basanitic foidite
definition Foiditoid that contains less than 90 percent feldspathoid minerals in the QAPF fraction, and has a plagioclase to total feldspar ratio that is greater than 0.5, with greater than 10 percent normative olivine. more like this
source LeMaitre et al. 2002 more like this
type
Resource
Concept
broader foiditoid
narrower basanitic foidite
in scheme simplelithology
basic igneous material
definition Igneous material with between 45 and 52 percent SiO2. more like this
source after LeMaitre et al. 2002 more like this
type
Resource
Concept
broader igneous material
in scheme simplelithology
narrower basic igneous rock
basic igneous rock
broader
basic igneous material
igneous rock
definition Igneous rock with between 45 and 52 percent SiO2. more like this
narrower basalt
gabbroic rock
broader basic igneous rock
source after LeMaitre et al. 2002 more like this
type
Resource
Concept
in scheme simplelithology
bauxite
definition Highly aluminous material containing abundant aluminium hydroxides (gibbsite, less commonly boehmite, diaspore) and aluminium-substituted iron oxides or hydroxides and generally minor or negligible kaolin minerals; may contain up to 20 percent quartz. commonly has a pisolitic or nodular texture, and may be cemented. more like this
source Eggleton 2001 more like this
type
Resource
Concept
broader material formed in surficial environment
narrower bauxite
in scheme simplelithology
biogenic sediment
definition Sediment composed of greater than 50 percent material of biogenic origin. Because the biogenic material may be skeletal remains that are not organic, all biogenic sediment is not necessarily organic-rich. more like this
narrower ooze
broader biogenic sediment
narrower carbonate ooze
organic rich sediment
broader biogenic sediment
note Corresponding biogenic sedimentary material and biogenic sedimentary rock categories are not included based on the interpretation that biogenic sedimentary rock will be in a different category, e.g. carbonate sedimentary rock or organic rich sedimentary rock. more like this
source SLTTs 2004 more like this
type
Resource
Concept
broader sediment
narrower
biogenic sediment
carbonate sediment
in scheme simplelithology
biogenic silica sedimentary rock
definition Sedimentary rock that consists of at least 50 percent silicate mineral material, deposited directly by biological processes at the depositional surface, or in particles formed by biological processes within the basin of deposition. more like this
example
radiolarite more like this
spicularite more like this
spiculite more like this
source based on NADM SLTT sedimentary; Hallsworth and Knox 1999 more like this
type
Resource
Concept
broader non clastic siliceous sedimentary rock
narrower biogenic silica sedimentary rock
in scheme simplelithology
bituminous coal
alt label
medium rank coal more like this
definition Coal that has vitrinite mean random reflectance greater than 0.6% and less than 2.0% (determined in conformance with ISO 7404-5), or has a gross calorific value greater than 24 MJ/kg (determined in conformance with ISO 1928). Hard, black, organic rich sedimentary rock; contains less than 91 percent fixed carbon on a dry, mineral-matter-free basis, and greater than 13-14 percent volatiles (dry, ash free). Formed from the compaction or induration of variously altered plant remains similar to those of peaty deposits. more like this
example
fettkohle more like this
flammkohle more like this
gasflammkohle more like this
gaskohle more like this
glanzkohle more like this
source Economic commission for Europe, committee on Sustainable Energy- United Nations (ECE-UN), 1998, International Classification of in-Seam Coals: Energy 19, 41 pp; see also http://en.wikipedia.org/wiki/Coal#Types_of_coal; Eberhard Lindner; Chemie für Ingenieure; Lindner Verlag Karlsruhe, S. 258 more like this
type
Resource
Concept
broader coal
in scheme simplelithology
boninite
broader andesite
high magnesium fine grained igneous rocks
narrower boninite
definition andesitic rock that contains more than 8 percent MgO. Typically consists of phenocrysts of protoenstatite, orthopyroxene, clinopyroxene, and olivine in a glassy base full of crystallites, and exhibits textures characterisitc of rapid crystal growth. more like this
source LeMaitre et al. 2002 more like this
type
Resource
Concept
in scheme simplelithology
boulder gravel size sediment
definition Sediment containing greater than 30 percent boulder-size particles (greater than 256 mm in diameter) more like this
source Wentworth size scale more like this
type
Resource
Concept
broader gravel size sediment
narrower boulder gravel size sediment
in scheme simplelithology
boundstone
definition Sedimentary carbonate rock with preserved biogenic texture, whose original components were bound and encrusted together during deposition by the action of plants and animals during deposition, and remained substantially in the position of growth. more like this
source Hallsworth and Knox 1999; SLTTs 2004 more like this
type
Resource
Concept
broader carbonate sedimentary rock
in scheme simplelithology
breccia
definition Coarse-grained material composed of angular broken rock fragments; the fragments typically have sharp edges and unworn corners. The fragments may be held together by a mineral cement or in a fine-grained matrix, and consolidated or nonconsolidated. Clasts may be of any composition or origin. In sedimentary environments, breccia is used for material that consists entirely of angular fragments, mostly derived from a single source rock body, as in a rock avalanche deposit, and matrix is interpreted to be the product of comminution of clasts during transport. Diamictite or diamicton is used when the material reflects mixing of rock from a variety of sources, some sub angular or subrounded clasts may be present, and matrix is pre-existing fine grained material that is not a direct product of the brecciation/deposition process. more like this
source Neuendorf et al. 2005 more like this
type
Resource
Concept
broader compound material
in scheme simplelithology
breccia gouge series
definition Fault material with features such as void spaces (filled or unfilled), or unconsolidated matrix material between fragments, indicating loss of cohesion during deformation. Includes fault-related breccia and gouge. more like this
source SLTTm 2004 more like this
type
Resource
Concept
broader fault related material
narrower breccia gouge series
in scheme simplelithology
calcareous carbonate sediment
broader
calcareous carbonate sedimentary material
carbonate sediment
definition Carbonate sediment with a calcite (plus aragonite) to dolomite ratio greater than 1 to 1. Includes lime-sediments. more like this
narrower impure calcareous carbonate sediment
broader calcareous carbonate sediment
pure calcareous carbonate sediment
broader calcareous carbonate sediment
source after Hallsworth and Knox 1999 more like this
type
Resource
Concept
in scheme simplelithology
calcareous carbonate sedimentary material
definition Carbonate sedimentary material of unspecified consolidation state with a calcite (plus aragonite) to dolomite ratio greater than 1 to 1. Includes lime-sediments, limestone and dolomitic limestone. more like this
narrower
calcareous carbonate sediment
calcareous carbonate sedimentary rock
source after Hallsworth and Knox 1999 more like this
type
Resource
Concept
broader carbonate sedimentary material
in scheme simplelithology
calcareous carbonate sedimentary rock
broader
calcareous carbonate sedimentary material
carbonate sedimentary rock
definition Carbonate sedimentary rock with a calcite (plus aragonite) to dolomite ratio greater than 1 to 1. Includes limestone and dolomitic limestone. more like this
narrower impure limestone
broader calcareous carbonate sedimentary rock
limestone
broader calcareous carbonate sedimentary rock
source SLTTs 2004; Hallsworth and Knox 1999 more like this
type
Resource
Concept
in scheme simplelithology
carbonate mud
alt label
marl more like this
broader
carbonate sediment
mud size sediment
definition Carbonate sediment composed of less than 25 percent clasts that have a maximum diameter more than 2 mm, and the ratio of sand size to mud size clasts is less than one. more like this
source follow pattern used for clastic sand and mud categories, based on SLTTs 2004 more like this
type
Resource
Concept
in scheme simplelithology
narrower carbonate ooze
carbonate mudstone
alt label
marlstone more like this
broader
carbonate sedimentary rock
generic mudstone
definition Mudstone that consists of greater than 50 percent carbonate minerals of any origin in the mud size fraction. more like this
example calcareous loess more like this
note Not a subcategory of carbonate sedimentary rock because definition does not specify 'carbonate minerals of intrabasinal origin', but is agnostic on origin of carbonate. Schnurrenberger et al. 2003 point out that it is very difficult (at least in lacustrine rocks) to distinguish chemically precipitated or diagenetic carbonate from primary biogenic carbonate. This distinction between biogenic, detrital, and pedogenic or authigenic carbonate material is thus not a good one to use in a general purpose classification system. Schnurrenberger, D., Russell, J. and Kelts, K., 2003, Classification of lacustrine sediments based on sedimentary components: Journal of Paleolimnology, v.29, p141-154. more like this
source This vocabulary more like this
type
Resource
Concept
in scheme simplelithology
narrower pure carbonate mudstone
broader carbonate mudstone
carbonate ooze
broader
carbonate mud
ooze
definition ooze that consists of more than 50 percent carbonate skeletal remains more like this
source This vocabulary more like this
type
Resource
Concept
in scheme simplelithology
carbonate rich mud
alt label
carbonate rich loess more like this
marl more like this
definition Mud size sediment that contains between 10 and 50 percent carbonate minerals in any size fraction. Carbonate origin is not specified. more like this
source This vocabulary more like this
type
Resource
Concept
broader mud size sediment
in scheme simplelithology
carbonate rich mudstone
alt label
marlstone more like this
definition Mudstone that contains between 10 and 50 percent carbonate minerals in the mud size fraction. Carbonate origin is not specified. more like this
example calcareous loess more like this
note Carbonate-rich mudstone' definition limits carbonate to mud-size fraction to avoid overlap with 'impure carbonate sedimentary rock'. If carbonate minerals are in sand or gravel size fractions, use 'impure carbonate sedimentary rock'. The operational test typically used to identify this category is if the rock fizzes when hydrochloric acid is applied. The '10 percent carbonate' criteria is a fuzzy boundary. more like this
source This vocabulary more like this
type
Resource
Concept
broader generic mudstone
in scheme simplelithology
carbonate sediment
broader
carbonate sedimentary material
sediment
definition Sediment in which at least 50 percent of the primary and/or recrystallized constituents are composed of one (or more) of the carbonate minerals calcite, aragonite and dolomite, in particles of intrabasinal origin. more like this
narrower calcareous carbonate sediment
carbonate mud
dolomitic sediment
broader carbonate sediment
impure carbonate sediment
broader carbonate sediment
pure carbonate sediment
broader carbonate sediment
source SLTTs 2004 more like this
type
Resource
Concept
in scheme simplelithology
carbonate sedimentary material
definition Sedimentary material in which at least 50 percent of the primary and/or recrystallized constituents are composed of one (or more) of the carbonate minerals calcite, aragonite and dolomite, in particles of intrabasinal origin. more like this
narrower calcareous carbonate sedimentary material
carbonate sediment
carbonate sedimentary rock
dolomitic or magnesian sedimentary material
broader carbonate sedimentary material
note Should carbonate sedimentary material be considered a kind of chemical sedimentary material? Is biogenic precipitation a chemical sedimentary process? more like this
source SLTTs 2004 more like this
type
Resource
Concept
broader sedimentary material
narrower carbonate sedimentary material
in scheme simplelithology
carbonate sedimentary rock
broader carbonate sedimentary material
sedimentary rock
narrower carbonate sedimentary rock
definition Sedimentary rock in which at least 50 percent of the primary and/or recrystallized constituents are composed of one (or more) of the carbonate minerals calcite, aragonite, magnesite or dolomite. more like this
narrower boundstone
calcareous carbonate sedimentary rock
carbonate mudstone
carbonate wackestone
broader carbonate sedimentary rock
crystalline carbonate
broader carbonate sedimentary rock
dolomitic or magnesian sedimentary rock
broader carbonate sedimentary rock
framestone
broader carbonate sedimentary rock
grainstone
broader carbonate sedimentary rock
impure carbonate sedimentary rock
broader carbonate sedimentary rock
packstone
broader carbonate sedimentary rock
pure carbonate sedimentary rock
broader carbonate sedimentary rock
note Particularly for fine-grained sedimentary rocks, distinction of 'intrabasinal' versus 'clastic' genesis can be very interpretive. In practice the use of clastic mudstone terminology as opposed to carbonate mudstone terminology may be dermined by a priori knowledge about the rock being categorized. If it is associated with other clastic rocks, the clastic categories will be favored, if with cabonate rocks, the carbonate categories will be favored. Carbonate rock subcatgories are defined on two orthogonal dimensions--mineralogy (calcitic vs. dolomitic vs non-carbonate impurities), and texture. The texture categories used here are those of Dunham (1962), and involve grain size (matrix vs. grains/allochems), fabric (matrix vs. grain supported), and genesis (bound, frame, or fragmental). The textural approach used for carbonate rocks is conceptually incompatible with that used for clastic sedimentary rocks, which is solely grain size or mineralogy based. This leads to problems in the vocabulary for rocks of mixed siliclastic/carbonate mineralogy (grainstone vs. sandstone, carbonate mudstone vs. carbonate rich mudstone, how to accomodate marlstone...). more like this
source SLTTs 2004 more like this
type
Resource
Concept
in scheme simplelithology