Geophysical Monograph Series, Page 97-104., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Daniele Cherniak +2 more
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Viscous strengthening followed by slip weakening during frictional melting of chert
Earth, Planets and Space, 2019 Pelagic chert is one of the major lithologies in accretionary complexes. Thus, frictional properties of chert at seismic slip rates are important for understanding of earthquake faulting in subduction zones.
Ginta Motohashi +2 more
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The rheological behaviour of fracture-filling cherts: example of Barite Valley dikes, Barberton Greenstone Belt, South Africa [PDF]
Solid Earth, 2015 In the Barberton Greenstone Belt, South Africa, a 100–250 m thick complex of carbonaceous chert dikes marks the transition from the Mendon Formation to the Mapepe Formation (3260 Ma). The sub-vertical- to vertical position of the fractures, the abundance
M. Ledevin +4 more
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Journal of Lithic Studies, 2016 In 2012, during a field survey to locate primary outcrops of cherts in the Carrodilla Mountain Range (Huesca, Spain), abundant remains of chert-knapping were found next to nodular cherts in primary and sub-primary position from the Garumnian limestones ...
Marta Sánchez de la Torre +4 more
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Frontiers in Earth Science, 2021 The end-Permian mass extinction (EPME) was the most severe mass extinction event of the Phanerozoic, and was associated with the development of global oceanic anoxia.
Tetsuji Onoue +2 more
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Geologic quadrangle map no. 47 [PDF]
, 1978 Process Steps: 1. Either: a) a Portable Document Format (PDF) version of the map provided the Bureau of Economic Geology, University of Texas at Austin was converted from pdf to Tagged Image File Format (TIFF) or b) a paper map was scanned and saved in ...
Barnes, Virgil E. (Virgil Everett), 1903-1998
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Journal of Lithic StudiesThe Oolitic chert is an important raw material for large blade production in Betic Cordillera (Spain) during 4th-3rd mill. BCE. These blades are part of a long-distance trade network of artefacts found in Chalcolithic settlements of southwestern Iberia ...
Patrícia Jordão +3 more
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A Geomechanical Study of the Mississippian Boone Formation [PDF]
, 2013 The Boone Formation in northwest Arkansas is a chert-limestone sequence analogous to the subsurface Mississippi Lime reservoir in parts of Oklahoma and Kansas. It has low permeability and produces via horizontal drilling and hydraulic fracturing.
Buckland, Karen Nicole Mason
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Earth-atmosphere evolution based on the new determination of Devonian atmosphere Ar isotopic composition [PDF]
The isotopic composition of the noble gases, in particular Ar, in samples of ancient atmosphere trapped in rocks and minerals provides the strongest constraints on the timing and rate of Earth atmosphere formation by degassing of the Earth's interior. We
Gandanger, Pierre +3 more
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Archaeology in Oceania, EarlyView.ABSTRACT In October 2022 an extensive archaeological landscape was identified by staff of the Vanuatu Cultural Centre at Pangpang on the east coast of Efate Island in central Vanuatu. It included midden deposits on the banks of the Pangpang River near the sea at Forari Bay where Lapita and Early Erueti‐style pottery sherds were recovered.
Stuart Bedford +9 more
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