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Hard, fine-grained sedimentary rock composed of cryptocrystalline silica
Chert (/tʃɜːrt/) is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, the mineral form of silicon dioxide
Chert
Early Devonian sedimentary deposit in Scotland
57°20′12″N 002°50′29″W / 57.33667°N 2.84139°W / 57.33667; -2.84139 The Rhynie chert is a Lower Devonian sedimentary deposit exhibiting extraordinary fossil
Rhynie_chert
Geologic formation in Western Australia
white chert. Facies 3, which overlies facies 2, consists largely of centimeter-layered chert. The layered chert consists of white-gray layered chert and
Dresser_Formation
Natural object displaced by humans
In 2014, a chert manuport was discovered embedded in an ancient reef on Barrow Island, Western Australia. The island has no natural chert deposits and
Manuport
Historic district in Minnesota, United States
The Grand Meadow Chert Quarry/Wanhi Yukan (GMC Quarry) is a 175-acre (71 ha) Indigenous archaeological site in Grand Meadow Township, Minnesota, United
Grand Meadow Chert Quarry/Wanhi Yukan Archaeological and Cultural Site
Grand_Meadow_Chert_Quarry/Wanhi_Yukan_Archaeological_and_Cultural_Site
Old and stable part of the continental lithosphere located in Pilbara, Western Australia
microorganisms permineralized in 3.465-billion-year-old Australian Apex chert rocks. However, the evidence for the biogenicity of these microstructures
Pilbara_Craton
Geologic formation in Minnesota and Ontario
The Gunflint chert (1.88 Ga) is a sequence of banded iron formation rocks that are exposed in the Gunflint Range of northern Minnesota and northwestern
Gunflint_chert
Type of chert
Mill Creek chert is a type of chert found in Southern Illinois and heavily exploited by members of the Mississippian culture (800 to 1600 CE). Artifacts
Mill_Creek_chert
Archaeological site in South Carolina, United States
Allendale Chert Quarries Archeological District is a set of 14 prehistoric archaeological sites located near Martin, Allendale County, South Carolina
Allendale Chert Quarries Archeological District
Allendale_Chert_Quarries_Archeological_District
Extinct genus of insects
partial head with preserved mouthparts from the Early Devonian aged Rhynie chert around 400 million years ago, when Earth’s first terrestrial ecosystems
Rhyniognatha
Small mass of a mineral with a contrasting composition to the enclosing sediment or rock
sediment or sedimentary rock. Examples include pyrite nodules in coal, a chert nodule in limestone, or a phosphorite nodule in marine shale. Normally,
Nodule_(geology)
Municipality in Valencian Community, Spain
del Consell, pel qual s’aprova el canvi de denominació del municipi de Chert/Xert per la forma exclusiva en valencià de Xert. [2014/6338] DOCV. Generalitat
Xert
is made up of three formations, the Grassy Knob Chert, the Backbone Limestone and Clear Creek Chert. It is Lower Devonian in age. Eastward the group
New_Harmony_Group
Geologic formation in the United States
The Huntersville Chert or Huntersville Formation is a Devonian geologic formation in the Appalachian region of the United States. It is primarily composed
Huntersville_Chert
semi-translucent light-grey stone with dark banding called Ramah chert. The Ramah chert crops out in a narrow geological bed stretching from Saglek Fiord
Ramah, Newfoundland and Labrador
Ramah,_Newfoundland_and_Labrador
Late Mesozoic terrane of heterogeneous rocks in the California Coast Ranges
experienced low-grade metamorphism. Other important lithologies include chert, basalt, limestone, serpentinite, and high-pressure, low-temperature metabasites
Franciscan_Complex
Microcrystalline or cryptocrystalline form of silica
Chalcedony is an aggregate of cryptocrystalline or microcrystalline silica, or in simpler terms, a mass of individual silica crystals that are too small
Chalcedony
Type of sedimentary rock
Radiolarite is a siliceous, comparatively hard, fine-grained, chert-like, and homogeneous sedimentary rock that is composed predominantly of the microscopic
Radiolarite
Carbon steel for making sparks
making, consisting of a piece of steel that can be struck against a flint, chert, or other hard rock in order to generate sparks. Before the invention of
Fire_striker
Geologic formation in Arkansas and Oklahoma, United States
The Bigfork Chert is a Middle to Late Ordovician geologic formation in the Ouachita Mountains of Arkansas and Oklahoma. First described in 1892, this
Bigfork_Chert
Closed cave in Utah
03694°W / 40.09750; -112.03694 Discovery 1960 (by Dale Green) Geology Chert Entrances 1 (closed off) Difficulty Slippery Hazards Slippery and tight
Nutty_Putty_Cave
Extinct genus of spore-bearing plants
preserved specimens described from the famous Early Devonian Rhynie chert and Windyfield chert in Aberdeenshire, Scotland. Asteroxylon is considered a basal
Asteroxylon
Lake Kajiado County, Kenya
Magadi is known for its deposits of siliceous chert. There are many varieties including bedded cherts that formed in the lake and intrusive dike-like
Lake_Magadi
Extinct species of vascular plant
and William H. Lang in 1917. The species is known only from the Rhynie chert in Aberdeenshire, Scotland, where it grew in the vicinity of a silica-rich
Rhynia
Geologic strata in North America
composed of chert and quarts pebbles. The Grover Gravel (Rubey, 1952) is found in western Illinois. Named for Grover, Missouri. It is composed of chert pebbles
Embayment_Megagroup
Geologic formation in Albania
The Kalur Chert is a geologic formation in Albania. It contains fossils dated to the late Bajocian to mid Oxfordian of the Jurassic. List of fossiliferous
Kalur_Chert
Miocene geological sedimentary formation in California
from diatom-rich plankton, became diatomites, porcelainites, and banded cherts. It generally dates to between 16 and 7 million years ago, but some sections
Monterey_Formation
Geologic sequence in Quebec, Canada
The Nuvvuagittuq Greenstone Belt (NGB; Inuktitut: [nuv.vu.a.git.tuq]) is a sequence of metamorphosed mafic to ultramafic volcanic and associated sedimentary
Nuvvuagittuq_Greenstone_Belt
Extinct genus of crustaceans
Lipostraca, and is the only abundant animal in the Pragian-aged Rhynie chert deposits. It resembles modern Anostraca, to which it is probably closely
Lepidocaris
Geographic and ecological region of Kansas and Oklahoma, United States
the limestones in the Flint Hills contain several bands of chert or flint. Because chert is much less soluble than the limestone surrounding it, the
Flint_Hills
Cryptocrystalline form of the mineral quartz
cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Historically, flint was widely
Flint
Banded variety of chalcedony
agates. Moreover, not every banded chalcedony is an agate (e.g. banded chert). Most agates form as nodules within volcanic rock, either as amygdules
Agate
Extinct genus of arthropod
specimen with preserved gut contents, found in the Windyfield (Rhynie) chert. Leverhulmia is an arthropod roughly 1.2 cm (0.47 in) long, with at least
Leverhulmia
Extinct genus of early plants
Horneophyton is among the most abundant fossil organisms found in the Rhynie chert, a Devonian Lagerstätte in Aberdeenshire, UK. A single species, Horneophyton
Horneophyton
Geological structural region on the south coast of New South Wales, Australia
a part of the fold belt. Rocks are turbidites, block in matrix mélange, chert, and volcanics. The accretionary complex itself could either be the toe
Narooma_terrane
Fossilized Flora
The Princeton Chert is a fossil locality in British Columbia, Canada, which comprises an anatomically preserved flora of Eocene Epoch age, with rich species
Princeton_Chert
Shaping of conchoidal fracturing stone to manufacture stone tools
Knapping (/ˈnæpɪŋ/ NAP-ing) is the shaping of flint, chert, obsidian, or other conchoidal fracturing stone through the process of lithic reduction to
Knapping
Fossil species of aquatic plant
Early Eocene Princeton Chert in British Columbia, Canada. Allenbya collinsonae is known exclusively from the Princeton Chert, a fossil locality in British
Allenbya_collinsonae
Island in the Calamian Group in the Philippines
mainly of the Liminangcong Formation, a Permian to Late Jurassic chert. This chert forms the distinguishing mountain ranges, with the Middle-Late Jurassic
Busuanga_Island
Study of organic evolution of plants based on fossils
land plant fossil locality is the Rhynie chert, found outside the village of Rhynie in Scotland. The Rhynie chert is an Early Devonian sinter (hot spring)
Paleobotany
Sedimentary rock formation in British Columbia, Canada
fish and plant fossils known from 1877 and onward, while the Princeton Chert was first indented in the 1950s and is known from anatomically preserved
Allenby_Formation
Island country within the Kingdom of the Netherlands
deepwater deposits of calcareous sands and fine clays, capped by siliceous chert containing radiolarians. Middle Curaçao contains alluvial soils from eroded
Curaçao
Extinct (Devonian) prevascular land plant
the new species Rhynia major. The species is known only from the Rhynie chert in Aberdeenshire, Scotland, where it grew in the vicinity of a silica-rich
Aglaophyton
Variety of iron-bearing sedimentary rock
sedimentary rock, in which the iron minerals are interlayered with quartz, chert, or carbonate. The name taconyte was coined in the 19th century by Horace
Taconite
Phyllosilicate mineral
decomposes during diagenesis leaving a distinctive variety of chert (Magadi-type chert). The mineral was first described by Hans P. Eugster in 1967 for
Magadiite
Provincial park in Ontario, Canada
animals from the Devonian period. The fossil beds also contain deposits of chert, a stone similar to flint which was worked to produce stone points. An archeological
Rock_Point_Provincial_Park
Limestone quarried on the Isle of Portland, Dorset, England
England. The quarries are cut in beds of white-grey limestone separated by chert beds. It has been used extensively as a building stone throughout the British
Portland_stone
have been found in 3.4 Ga rocks, including 3.465-billion-year-old Apex chert rocks from the same Australian craton region, and in 3.42 Ga hydrothermal
Earliest_known_life_forms
Brittle fracture surface that does not follow any natural planes of separation
of growth of a shell". Materials that break in this way include quartz, chert, flint, quartzite, jasper, and other fine-grained or amorphous materials
Conchoidal_fracture
Archeological collection of Mississipian artifacts
examples of prehistoric stonework". The ceremonial objects are made from Dover chert, a type of flint found exclusively in the nearby Dover, Tennessee area.
Duck_River_cache
Geological formation in the United States
Sandstone and Shriver Chert". United States Geological Survey. Retrieved 25 September 2015. "Oriskany Sandstone and Huntersville Chert". United States Geological
Oriskany_Formation
Geologic unit found in the Illinois Basin, U.S.
Clear Creek Chert Clear Creek Formation Pragian New Harmony Group Backbone Limestone Hunton Megagroup Backbone Limestone Grassy Knob Chert Bailey Limestone
Pope_Mega_Group
Extinct genus of springtails
Rhyniella is a genus of fossil springtails (Collembola) from the Rhynie chert, which formed during the Pragian stage of the Early Devonian. One species
Rhyniella
Plant and fungi fossils from the Eocene Okanagan Highlands
present in the Eocene Okanagan Highlands. A permineralized chert flora, the Princeton Chert is found along the Similkameen River interbedded with coal
Paleoflora of the Eocene Okanagan Highlands
Paleoflora_of_the_Eocene_Okanagan_Highlands
Type of metamorphic rock
swirls result from impurities, for example clay, sand, iron oxides, or chert that were originally present in the protolith—magnesium-rich varieties may
Marble
Rock formed by the deposition and cementation of particles
overlying sediments and undergoes chemical transformation. Deposits of chert formed from the accumulation of siliceous skeletons of microscopic organisms
Sedimentary_rock
Genus of fungi
phylogenetic affinity within the Pezizomycotina total group, known from the Rhynie chert. Paleopyrenomycites dates back over 400 million years to the Early Devonian
Paleopyrenomycites
Fossil taxon
Nematoplexus rhyniensis is a fossil known from the Rhynie chert assigned to the nematophytes. It comprises a loose mass of coily aseptate tubes. Tubes
Nematoplexus
Geographic region in Tennessee, United States of America
Mississippian limestone, chert, shale, and sandstone with exposures of Devonian, Silurian, Ordovician, and Cambrian limestone, chert, and shale. In the northern
Highland_Rim
Type of Polynesian club
Gregory Perino. Greatly damaged by a plow, the weapon was composed of eight chert imitation shark teeth, and tipped with five actual shark teeth. In both
Leiomano
Subfamily of flowering plants
Highlands Princeton Chert site. Cevallos-Ferriz, S; Stockey, RA (1988). "Permineralized fruits and seeds from the Princeton Chert (Middle Eocene) of British
Lasioideae
Village in Aberdeenshire, Scotland
thousands 1400 years ago. The Rhynie Chert is named after the village, as is the fossil plant genus Rhynia. The Rhynie Chert is a sediment deposited in the
Rhynie,_Aberdeenshire
Kingdom of organisms
Devonian fossil assemblage from the Rhynie chert. These early plants were preserved by being petrified in chert formed in silica-rich volcanic hot springs
Plant
Warfare of the Mesoamerican civilization
Weapons were crafted mostly from obsidian and chert, obsidian being the sharpest (but more brittle). Knapping chert or obsidian into bifacial projectile points
Maya_warfare
Second stage of the Devonian
the Emsian Stage. The most important Lagerstätte of the Pragian is Rhynie chert in Scotland. It is named after the city of Prague. The GSSP is located within
Pragian
Quarry Site, covering 40 acres (16 ha), is the only known source of Lambrix chert, which was used for a variety of prehistoric tools. 4 Hart Downtown Historic
National Register of Historic Places listings in Michigan
National_Register_of_Historic_Places_listings_in_Michigan
Genus of extinct ferns
species is known from permineralized remains recovered from the Princeton Chert in British Columbia, Canada. Rhizomes of Dickwhitea are noted for having
Dickwhitea
Mayan archaeological artifact
Although generally referred to as "flints", they were typically fashioned from chert, chalcedony and obsidian. Eccentric flints were first categorised by western
Eccentric_flint
Class of crustaceans
Lepidocaris rhyniensis, which is the most abundant animal in the Rhynie chert deposits. It resembles modern Anostraca, to which it is probably closely
Branchiopoda
Archaeological site in Wyoming, U.S.
Clovis point, Sevier County, Utah, chert - Natural History Museum of Utah
La_Prele_Mammoth_Site
Carboniferous period geologic formation in Appalachia and Southeastern United States
related to Fort Payne Formation. The Fort Payne Formation, or Fort Payne Chert, is a geologic formation found in the southeastern region of the United
Fort_Payne_Formation
Biological process to convert light into chemical energy
photosynthesis comes from thylakoid membranes preserved in 1.75-billion-year-old cherts. Oxygenic photosynthesis is the main source of oxygen in the Earth's atmosphere
Photosynthesis
Extinct genus of spore-bearing plants
(Pragian, around 410 million years ago). Fossils were found in the Rhynie chert, Scotland. The remains are very fragmentary, but the plant appears to be
Trichopherophyton
Perception of meaningful patterns or images in random or vague stimuli
to be miniature scenes on a cut section, which is then used for jewelry. Chert nodules, concretions, or pebbles may in certain cases be mistakenly identified
Pareidolia
Hard limestones rock formation in North America
contains significant outcrops of flint (a type of chert) which bears the escarpment's name. This variety of chert was of great importance to First Nations peoples
Onondaga_Limestone
Order of arachnids
Well-preserved fossils have been found in the 400-million-year-old Rhynie cherts of Scotland, and 305-million-year-old rocks in France. These fossils look
Opiliones
Prehistoric period in Mesoamerica
Belize Chert-Bearing Zone (NBCBZ) around the site of Colha. NBCNZ chert, also known as Colha chert, is incredibly high quality and distinct from chert originating
Archaic_period_in_Mesoamerica
Geologic formation in Alaska, United States
The McCann Hill Chert is a geologic formation in Alaska. It preserves fossils dating back to the Devonian period. Earth sciences portal Alaska portal
McCann_Hill_Chert
Archaeological site in Iran
are made of gray and black chert, a red variant of fine red-green chert, fine dark brown chert, and one example of white chert. These rock types are found
Khalvasht
Capital of Alberta, Canada
resources, including fish, medicine, and materials for tool making, such as chert or quartzite, which are abundant in the area around the modern city and
Edmonton
Bronze Age civilisation in South Asia
the measurement of mass as revealed by their hexahedron weights. These chert weights were in a ratio of 5:2:1 with weights of 0.05, 0.1, 0.2, 0.5, 1
Indus_Valley_Civilisation
Stratigraphic layer in Western Australia
cells. Dated between 3.53–3.427 Ga, these microstructures, found in Archean chert, are considered to be the oldest known geological record of life on Earth
Warrawoona_Group
Australian archaeogical site
production of stone tools, with the most common materials used being quartzite, chert, and quartz. The use of bipolar anvilling, a method for fracturing small
Bone_Cave_(Tasmania)
Geologic formation in Indiana, USA
Clear Creek Chert Clear Creek Formation Pragian New Harmony Group Backbone Limestone Hunton Megagroup Backbone Limestone Grassy Knob Chert Bailey Limestone
Muscatatuck_Group
Granular material composed of finely divided rock and mineral particles
Sand from Pismo Beach, California. Components are primarily quartz, chert, igneous rock, and shell fragments.
Sand
Extinct monotypic genus of coryphoid palm
species is known from permineralized remains recovered from the Princeton Chert in British Columbia, Canada. Leaves of Uhlia have "tar spot"-like fungal
Uhlia
Park in San Francisco, California, US
area is underlain by Franciscan chert bedrock, and a large percentage of the hill is barren. At the hilltop, the chert bedrock in terra cotta red is clearly
Corona_Heights_Park
Type of igneous rock
Sedimentary rock Argillite Arkose Banded iron formation Breccia Calcarenite Chalk Chert Claystone Coal Conglomerate Coquina Diamictite Diatomite Dolomite Evaporite
Teschenite
Town in Western Australia
Group) being formed by evaporation and a dome structure from the North Pole chert (also Warrawoona Group) being formed by soft-sediment deformation. Research
Marble_Bar,_Western_Australia
Second era of the Archean Eon
kilometres (23–36 mi) wide, collided with the Earth. The Buck Reef chert and the Josefsdal chert, two rock formations in the Barberton Greenstone Belt, both
Paleoarchean
Village near Jammu in India
west Asian affinity), tangled bone arrow-heads, terracotta bangles, cakes, chert blade etc. Significant finds include potsherds bearing incised Harappan
Manda,_Jammu
State rock of Missouri
Mozarkite is a form of chert (flint). It is the state rock of Missouri. The name is a portmanteau, formed from Mo (Missouri), zark (Ozarks), and ite (meaning
Mozarkite
Group of islands in the Philippines
including cherts, clastics, and limestones. Busuanga and Culion islands consist mainly of the Liminangcong Formation, a Permian to Late Jurassic chert. This
Calamian_Islands
Final stage of the Devonian
H. (June 15, 2011). "A high-precision U–Pb age constraint on the Rhynie Chert Konservat-Lagerstätte: time scale and other implications" (PDF). Journal
Famennian
Knapped stone tools are made from cryptocrystalline materials such as chert, flint, radiolarite, chalcedony, obsidian, basalt, and quartzite via a splitting
Stone_tool
Archaeological site in New Mexico, USA
Clovis point, 11500–9000 BC, Sevier County, Utah, chert
Mockingbird_Gap_site
National park in Arkansas, United States
soft and argillaceous. The Bigfork Chert overlies the Womble Shale and consists almost entirely of chert and silty chert in layers 2 to 12 inches (51 to
Hot_Springs_National_Park
Sedimentary rock formed from ooids
can be composed of phosphate, clays, chert, dolomite or iron minerals, including hematite. Dolomitic and chert ooids are most likely the result of the
Oolite
Highland region in central-southern United States
Springfield formation's surface is primarily Mississippian limestone and chert, the Salem Plateau is made of older Ordovician dolomites, limestones, and
Ozarks
Widespread shallow marine limestone
Overlies Black River & Plattin Formation Lithology Primary Limestone Other Chert Location Region Indiana, Michigan, Ohio, Pennsylvania, Virginia, West Virginia
Trenton_Group
CHERT
CHERT
Surname or Lastname
English
English : habitational name from Crockford Bridge in the parish of Chertsey, Surrey. The place name is of uncertain origin; the first element may be Old English croc(ca) ‘pot’, used of a hollow in the ground or of a place where potsherds were found; the second is Old English ford ‘ford’.
CHERT
CHERT
Boy/Male
Indian
One who protects
Boy/Male
English
Heel.
Surname or Lastname
English and eastern French
English and eastern French : from a pet form of the personal name Robert.
Girl/Female
Muslim
Scent
Girl/Female
English American
Originally the ancient duchy of Bretagne in France. Celtic Bretons emigrated from France to...
Girl/Female
Tamil
A holy river
Surname or Lastname
English
English : topographic name for someone who lived by a churchyard, Middle English chircheheye literally ‘church enclosure’.
Boy/Male
Muslim
Canopus star
Girl/Female
Tamil
Star, Noble
Boy/Male
Muslim
Great leader
CHERT
CHERT
CHERT
CHERT
CHERT
n.
An impure, massive, flintlike quartz or hornstone, of a dull color.
n.
A siliceous stone, a variety of quartz, closely resembling flint, but more brittle; -- called also chert.
a.
Like chert; containing chert; flinty.
n.
A provincial name given in England to basaltic rocks, and applied by miners to other kind of dark-colored unstratified rocks which resist the point of the pick. -- for example, to masses of chert. Whin-dikes, and whin-sills, are names sometimes given to veins or beds of basalt.