Results 181 to 190 of about 1,680,203 (251)

Processes and Patterns of Dolomite Precipitation in Aptian Pre‐Salt Deposits of Santos Basin, Brazil

Journal of Petroleum Geology, EarlyView.
ABSTRACT The Aptian pre‐salt lacustrine carbonates represent the most significant oil exploration target along the South Atlantic margin. Dolomitization of the Santos Basin Barra Velha Formation (BVF) is critical for reservoir quality, yet its origin, patterns, and evolution remain poorly understood.
J. T. F. Oste, R. Fricks Sayão, L. F. De Ros, L. Borghi   +3 more
wiley   +1 more source

Maya Postclassic persistence in the Birds of Paradise Wetland Fields, Belize. [PDF]

Proc Natl Acad Sci U S A
Sánchez-Morales LM, Beach TP, Luzzadder-Beach S, Krause S, Cook D, Smith B, Lentz D, Quiroz C, Pratt W, Phillips L, Guderjan T, Hanratty C, Valdez F.   +12 more
europepmc   +1 more source

Explainable Intelligent Framework for Reliable Drilling Rate Prediction and Feature Selection in Complex Sedimentary Formations

Journal of Petroleum Geology, EarlyView.
ABSTRACT Accurate prediction of the drilling rate of penetration (ROP) is crucial to optimizing drilling performance, wellbore stability, enhancing operational efficiency, and reducing the overall cost of hydrocarbon exploration. This study focused on evaluating and comparing different machine learning models for ROP prediction and identifying the most
Mohammad Islam Miah, Md. Asif Uz Zaman Antu, Travis Wiens   +2 more
wiley   +1 more source

Multi-Analytical Characterization of the Earthen Plaster and Ground Layer from the Nirvana Platform in Cave No. 47 of the Kizil Grottoes, Xinjiang, China. [PDF]

Materials (Basel)
Xue L, Shen L, Yang J, Zhou Z.
europepmc   +1 more source

Specialised and persistent raw material procurement by humans in the Middle Pleistocene. [PDF]

Nat Commun
Will M, Sommer C, Möller GHD, Botha GA, Blessing MA, Msimanga L, Mazel A, Val A, Venditti F, Riedesel S.   +9 more
europepmc   +1 more source

Assessing the analytical capabilities of handheld laser‐induced breakdown spectroscopy (hLIBS) on corroded iron objects of possible meteoritic origin

Meteoritics &Planetary Science, EarlyView.
Abstract Despite meteorites having been recognized as the source of iron in some ancient iron artifacts, few archeological irons have been analyzed so far, as invasive methods are precluded. In this work, four iron knives and one axe collected near Guelmime and Imilchil (Morocco) were investigated by advanced analytical techniques, including handheld ...
Giorgio S. Senesi, Albert Jambon, Olga De Pascale, Lahcen Ouknine, Hassan Nachit, Fouad Khiri, Abderrahmane Ibhi   +6 more
wiley   +1 more source

High-resolution chronologies of anthropogenic soil substrates based on portable luminescence reader data. [PDF]

Sci Rep
Brill D, van der Meij WM, von Lengrießer P, Tschernich F, Zander A, Opitz S, Reimann T.   +6 more
europepmc   +1 more source

MINDING THE GAP: A METHODOLOGICAL AND CHRONOLOGICAL REASSESSMENT OF EASTERN MEDITERRANEAN PURPLE‐DYE PRODUCTION IN THE BRONZE AND IRON AGES

Oxford Journal of Archaeology, EarlyView.
Summary Purple dye was an iconic status symbol in the ancient Mediterranean, yet tracing the expansion and shift of production from the Aegean to the Levant encounters substantial methodological difficulties. Using Tel Shiqmona – a unique industrial centre with a continuous Iron Age sequence – as an archaeological benchmark, this study defines detailed
Golan Shalvi
wiley   +1 more source

Tectonically driven integration of the 4.8 Ma Colorado River USA tracked with detrital sanidine and fish genetics. [PDF]

Nat Commun
Karlstrom KE, Heizler MT, Aslan A, Hillenbrand IW, Cather SM, Turner TF, Osborne MJ, Henry CD, Crossey LJ.   +8 more
europepmc   +1 more source

Not all rhodoliths need a bed–depositional mechanisms in shallow water Sporolithon nodosum rhodoliths from the Whangaparaoa peninsula (North Island, New Zealand)

Sedimentology, EarlyView.
ABSTRACT Rhodoliths, formed by crustose coralline algae (CCA), are prominent components in carbonate platform deposits, contributing to the characteristic rhodalgal facies. Their formation is influenced by both biological and physical factors, and under specific conditions, they can accumulate, forming extensive rhodolith beds.
Sebastian Teichert, Thomas Mölg, Ines Pyko, Elena Kropač, Peter Marriott, Roberta D'Archino, Nicolas Cullen, Daniela Basso, Nora Persch, Sven Bach, Ella Lis, Beau Masters, Wendy Nelson   +12 more
wiley   +1 more source