Results 171 to 180 of about 116,871 (355)
The secondary classification of unequilibrated chondrites [PDF]
arXivThe multiplication of decimal petrologic schemes for different or the same chondrite groups evinces a lack of unified guiding principle in the secondary classification of type 1-3 chondrites. We show that the current OC, R and CO classifications can be a posteriori unified, with only minor reclassifications, if the decimal part of the subtype is ...
arxiv
Geofluids, 2019 The study area, Pannonian Basin (Central Europe), is characterized by high heat flow and presence of low-enthalpy geothermal waters. In the Szeged Geothermal Systems (Hungary), having Miocene to Pliocene sandstone aquifers with dominantly Na–HCO3-type ...
Andrea Varga +5 more
doaj +1 more source
Workshop on Geology of the Apollo 17 Landing Site [PDF]
The topics covered include the following: petrology, lithology, lunar rocks, lunar soil, geochemistry, lunar geology, lunar resources, oxygen production, ilmenite, volcanism, highlands, lunar maria, massifs, impact melts, breccias, lunar crust, Taurus ...
Ryder, G., Schmitt, H. H., Spudis, P. D.
core +1 more source
Boreas, Volume 52, Issue 1, Page 78-98, January 2023., 2023 A detailed stratigraphic and geotechnical investigation of the uppermost 50 m below the sea floor was carried out for parts of the German North Sea sector using combined information from shallow seismic reflection surveys, 50‐m‐long sediment cores and cone penetration tests covering an area of ~150 km2.
Matthias Fleischer +5 more
wiley +1 more source
III.-The petrology of the District [PDF]
Proceedings of the Geologists' Association, 1915 n ...
openaire +2 more sources
Petrology and Au-PGE investigation dataset of the recent alluvial sediments from the Ngaye River watershed, northern Cameroon. [PDF]
Data Brief, 2023 Ndjigui PD, Ngono EHO, Fadil-Djenabou S.
europepmc +1 more source
Boreas, Volume 52, Issue 1, Page 124-138, January 2023., 2023 Tierra del Fuego in Argentina is a unique location to examine past Holocene wind variability since it intersects the core of the Southern Hemisphere Westerly Winds (SHWW). The SHWW are the most powerful prevailing winds on Earth. Their variation plays a role in regulating atmospheric CO2 levels and rainfall amounts and distribution, both today and in ...
Alexis Vizcaino +6 more
wiley +1 more source
Komatiites: From Earth's Geological Settings to Planetary and Astrobiological Contexts [PDF]
arXiv, 2005 Komatiites are fascinating volcanic rocks. They are among the most ancient lavas of the Earth following the 3.8 Ga pillow basalts at Isua and they represent some of the oldest ultramafic magmatic rocks preserved in the Earth's crust at 3.5 Ga. This fact, linked to their particular features (high magnesium content, high melting temperatures, low dynamic
arxiv
The pioneer work of Bernard Kübler and Martin Frey in very low-grade metamorphic terranes: paleo-geothermal potential of variation in Kübler-Index/organic matter reflectance correlations. A review [PDF]
, 2018 Low-temperature metamorphic petrology occupies the P-T field between sedimentary and metamorphic petrology. Two important pillars of low-temperature metamorphism are coal petrology and clay mineralogy.
Bozkaya, Ömer +5 more
core
Estimation and uncertainty quantification of magma interaction times using statistical emulation
VolcanicaThe evolution of volcanic plumbing systems, which controls the style and size of eruptions, is largely determined by processes at depths that are not observable.
Luca Insolia +4 more
doaj +1 more source