Results 31 to 40 of about 63,261 (236)

Evaporites and the salinity of the ocean during the Phanerozoic: Implications for climate, ocean circulation and life [PDF]

, 2005
A compilation of data on volumes and masses of evaporite deposits is used as the basis for reconstruction of the salinity of the ocean in the past.
Balukhovsky, A. N., Flögel, Sascha, Hay, William W., Migdisov, A., Söding, Emanuel, Wold, C. N.   +5 more
core   +1 more source

Tectonic regime of the area of the Sukhoi Log geological practice in the Middle Devonian and volcanic arcs in the basement of Western Siberia

Известия высших учебных заведений: Нефть и газ, 2021
The article briefly describes current understanding of the tectonic regime of study area. It is related to the field geological practice of students of Industrial University of Tyumen.
Yu. A. Zagorovsky
doaj   +1 more source

Clay mineralogy, chemistry, and diagenesis of late devonian K-bentonite occurrences in northwestern Turkey [PDF]

, 2015
Thin beds of tephra (K-bentonites) formed by the diagenesis of volcanic ash are exposed within the limestone-dolomitic limestone successions of the Yilanli formation at Zonguldak and Bartin in northwestern Turkey.
Bozkaya, Ömer, Göncüoğlu, M.C., Günal-Türkmenoğlu, A., Okuyucu, C., Yilmaz, İ.Ö., Ünlüce, Ö.   +5 more
core   +1 more source

Insight into tube-building behaviour and palaeoecology of some agglutinating worms from the Upper Devonian of Nevada, USA [PDF]

, 2015
Agglutinated worm tubes from the Upper Devonian of the Devils Gate section in Nevada, USA are reported for the first time, filling a major gap in their Palaeozoic fossil record.
Bond, David P. G., Zatoń, Michał
core   +1 more source

Cone-in-cone structure: New data

Литосфера, 2020
Research subject. The article presents the results of investigating calcite lenses with a cone-in-cone structure from Middle Devonian clay terrigenous deposits in the Middle Timan.Methods.
I. Kh. Shumilov
doaj   +1 more source

Models of Inquiry-based Science Outreach to Urban Schools [PDF]

, 2004
NOTE: This is a large file, 15.5mb in size! A primary obstacle to urban precollege geoscience education is limited access to inquiry-based geoscience experiences that are engaging and relevant to students' lives.

core   +1 more source

Devonian–Carboniferous extension and Eurekan inversion along an inherited WNW–ESE-striking fault system in Billefjorden, Svalbard [version 2; peer review: 2 approved, 1 not approved]

Open Research Europe, 2023
Background The Billefjorden area in central Spitsbergen hosts thick Lower–lowermost Upper Devonian, late–post-Caledonian collapse deposits presumably deformed during the Late Devonian Svalbardian Orogeny.
Lis Allaart, Jean-Baptiste P. Koehl, Riko Noormets   +2 more
doaj   +1 more source

Petrogenetic processes in the ultramafic, alkaline and carbonatitic magmatism in the Kola Alkaline Province: a review [PDF]

, 2005
Igneous rocks of the Devonian Kola Alkaline Carbonatite Province (KACP) in NW Russia and eastern Finland can be classified into four groups: (a) primitive mantle-derived silica-undersaturated silicate magmas; (b) evolved alkaline and nepheline syenites; (
Balaganskaya, E., Beard, Andy, Demaiffe, D., Downes, Hilary, Liferovich, R.   +4 more
core   +1 more source

Tectonic history of the South Tannuol Fault Zone (Tuva region of the northern Central Asian Orogenic Belt, Russia) : constraints from multi-method geochronology [PDF]

, 2020
In this study, we present zircon U/Pb, plagioclase and K-feldspar Ar-40/Ar-39 and apatite fission track (AFT) data along the South Tannuol Fault Zone (STFZ).
De Grave, Johan, Mikhailova, Polina, Nachtergaele, Simon, Van Ranst, Gerben, Vetrov, Evgeny, Vetrova, Natalia, Zhimulev, Fedor   +6 more
core   +1 more source

Influence of palaeoweathering on trace metal concentrations and environmental proxies in black shales [PDF]

, 2017
The mineralogical and chemical compositions of Lower Carboniferous (Tournaisian) marine black shale from the Kowala quarry, the Holy Cross Mountains, Poland, were investigated.
Agnieszka Pisarzowska, Algeo, Algeo, Algeo, Allan, Altabet, Altabet, Anbar, Anthony S. Cohen, Arkadiusz Derkowski, Arnold, Arthur, Averbuch, Baker, Barling, Bauersachs, Behar, Berkowski, Berner, Bolton, Bond, Brantley, Brumsack, Chadima, Chen, Clayton, Clayton, Dalai, Derkowski, Dias, Dickson, Duan, Erickson, Faure, Franke, Freudenthal, Frimmel, Georgiev, German, Goldberg, Gong, Grosjean, Hannigan, Hatch, Helz, Huerta-Diaz, Immenhauser, Jaffe, Jan Środoń, Joachimski, Jones, Keller, Kolowith, Kump, Landais, Lehmann, Leszek Marynowski, Lev, Leythaeuser, Liermann, Littke, Liu, Lo, Lyons, Ma, Macko, Macko, Marynowski, Marynowski, Marynowski, Marynowski, Marynowski, Marynowski, McArthur, McCarty, Michał Rakociński, Morford, Mort, Möbius, Nägler, Obreht, Pearce, Pearce, Perkins, Petsch, Peucker-Ehrenbrink, Pollack, Pope, Popp, Popp, Poulson, Pujol, Rachidi, Racka, Racki, Racki, Rafał Szaniawski, Reitz, Rimmer, Rimmer, Riquier, Rooney, Ross, Rudnick, Sachs, Sackett, Saino, Schmitz, Schoepfer, Siebert, Siebert, Slomp, Szaniawski, Szaniawski, Szulczewski, Tamamura, Torsvik, Tribovillard, Tribovillard, Tulipani, Tuttle, Wignall, Wildman, Williams, Yu, Zwing, Śliwiński, Środoń, Środoń   +128 more
core   +1 more source