Results 81 to 90 of about 58,241 (215)

Microbial Diversity Across Chemolithotrophic and Phototrophic Biofilms in Cold Sulfur Springs

MicrobiologyOpen, Volume 15, Issue 1, February 2026.
Distinct microbial communities occur between adjacent sulfur‐rich and freshwater springs. Chemolithotrophic and phototrophic sulfur‐oxidizing taxa were enriched in cold sulfur spring biofilms, while adjacent freshwater biofilms supported more diverse microbial community composition.
David M. Frings, James M. Mellinger, Kevin M. Drace   +2 more
wiley   +1 more source

Preliminary archaeometric investigation on Middle Neolithic siliceous tools from Limba-Oarda de Jos (Transylvania, Romania)

Journal of Lithic Studies, 2019
The present archaeometric study focuses on a set of archaeological siliceous lithic tools that are assigned to the early Vinča culture period (Vinča A and Vinča B1).
Mar Rey-Solé, Corina Ionescu, Marius Ciuta, Marieta Muresan-Pop, Viorica Simon   +4 more
doaj   +1 more source

Chert exploitation and circulation in eastern Lombardy (Northern Italy): a diachronic overview through prehistory

UISPP Journal, 2021
This work focuses on the Eastern Lombardy Prealps (central Southern Alps), including the Brescia and Bergamo provinces. Knappable lithic raw materials are represented by cherts and radiolarites which are quite common in the Jurassic-Cretaceous ...
Stefano Bertola, Domenico Lo Vetro, Paolo Schirolli, Federico Confortini, Matteo Malzanni, Pasquino Pellecchi   +5 more
doaj   +1 more source

Slab‐Mantle Interaction During Subduction Initiation: Constraints From Trace Element and Sr‐Nd‐Pb Isotope Systematics of Boninite and Other Magmas and Metamorphic Sole in the Oman Ophiolite

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract The Late Cretaceous Oman ophiolite includes a series of volcanic rocks generated during the transition from spreading ridge to protoarc associated with subduction initiation. We analyzed major and trace elements and Sr, Nd, and Pb isotope compositions of lavas and dikes of the protoarc stage, especially boninites. We also analyzed amphibolites
Tsuyoshi Ishikawa, Kazuya Nagaishi, Kyoko Kanayama, Keitaro Kitamura, Shigeyuki Wakaki, Yuki Kusano, Susumu Umino   +6 more
wiley   +1 more source

Procurement and mobility during the Late Pleistocene: Characterising the stone-tool assemblage of the Picamoixons site (Tarragona, NE Iberian Peninsula)

Journal of Lithic Studies, 2016
The Picamoixons site is a rockshelter located in the province of Tarragona (NE Iberian Peninsula). It was object of two rescue campaigns during 1988 and 1993, which led to the recovery of a complete archaeological assemblage, including stone tools as ...
María Soto
doaj   +1 more source

The McMinn Ranch Site (41CP72) in the Dry Creek Valley, Camp County, Texas [PDF]

, 2013
The McMinn Ranch site (41CP72) is a small (less than an acre) prehistoric site on an alluvial terrace along the north side of the lower reaches of Dry Creek, an important eastward-flowing tributary to Big Cypress Creek.
Perttula, Timothy K.
core   +1 more source

Site 1222

, 2002
Site 1222 (13°48.98´N, 143°53.35´W; 4989 meters below sea level [mbsl]; Fig. F1) forms a south-central component of the 56-Ma transect drilled during Leg 199 and is situated ~2° south of the Clarion Fracture Zone in typical abyssal hill topography.
Backman, J., Busch, W.H., Coxall, H.K., Faul, K., Gaillot, P.A., Hovan, S.A., Janecek, T.R., Knoop, P., Kruse, S., Lanci, L., Lear, C.H., Lyle, M., Moore, T.C., Nigrini, C.A., Nishi, H., Nomura, R., Norris, R.D., Parés, J.M., Pälike, H., Quintin, L., Raffi, I., Rea, B.R., Rea, D.K., Steiger, T.H., Tripati, A.K., Vanden Berg, M.D., Wade, B.S., Wilson, P.A.   +27 more
core   +1 more source

Geolipidomics: Non‐Targeted Analysis of Rapidly Heated Geologic Samples With Gas‐Chromatography‐Mass Spectrometry

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract Lipids are powerful tools for reconstructing paleoenvironments and geologic processes because of their ubiquity and preservation in the rock record. Traditionally, organic geochemistry studies are targeted analyses of known biomarker compounds with known responses to past environmental conditions or geologic processes.
M. C. Baker, P. J. Polissar, H. M. Savage   +2 more
wiley   +1 more source

Tidal flat deposits of the Lower Proterozoic Campbell Group along the southwestern margin of the Kaapvaal Craton, Northern Cape Province, South Africa [PDF]

, 1991
Lower Proterozoic stromatolites and associated clastic carbonate deposits of the Campbell Group, from the southern margin (Prieska area) of the Kaapvaal Craton, northern Cape Province, are described.
Aigner, Aitken, Altermann, Armstrong, Awramik, Beukes, Beukes, Beukes, Beukes, Beukes, Beukes, Beukes, Beukes, Beukes, Beukes, Black, Button, Clendenin, Danielson, Davies, Donaldson, Dravis, Eriksson, Eriksson, Eriksson, Flügel, Flügel, Folk, Garrett, Gatrall, Ginsburg, H.-G. Herbig, Hardie, Harris, Hoffman, Hoffman, Hofmann, Irwin, James, Kendall, Klein, Logan, Logan, Logan, Mawson, McIllreath, Miller, Monty, Peryt, SACS-South African Committee for Stratigraphy, Shinn, Smoot, Truswell, Truswell, Van Straaten, Visser, W. Altermann, Walraven, Walter, Wilson, Young, Young, Young, Young, Young, Young, Young   +66 more
core   +1 more source

Reconstructing Environmental and Microbial Ecosystem Changes Across the Permian–Triassic Mass Extinction at Lusitaniadalen, Svalbard

Paleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.
Abstract The Permian–Triassic environmental crisis triggered fundamental changes in marine ecosystems, culminating in the most severe biodiversity crisis of the Phanerozoic. Yet, the environmental and geochemical conditions governing the crisis and ecosystem recovery remain debated.
S. Z. Buchwald, A. B. Frank, D. Birgel, K. Senger, T. Mosociova, Y. Pei, B. Beaty, L. G. Tarhan, F. Galasso, M. A. Gómez Correa, S. E. Grasby, U. Struck, D. Yuan, R. Steinkrauss, J. Gliwa, N. Lahajnar, J. Peckmann, W. J. Foster   +17 more
wiley   +1 more source