Results 31 to 40 of about 23,480 (273)
Petroleum Exploration and Development, 2020 Ancient marine carbonates experienced complex modifications, making it difficult to identify reservoir genesis and effective porosity before hydrocarbon migration.
Hanxuan YANG +6 more
doaj +1 more source
Scientific Reports, 2022 Carlin-type gold deposits are among the largest hydrothermal gold deposits in the world. However, direct dating the metallogenic age of these deposits is difficult, because not all deposits provide material suitable for conventional radiometric methods ...
Rongguo Hu +8 more
doaj +1 more source
Magmatic and hydrothermal behavior of uranium in syntectonic leucogranites: The uranium mineralization associated with the Hercynian Guérande granite (Armorican Massif, France) [PDF]
, 2017 Most of the hydrothermal uranium (U) deposits from the European Hercynian belt (EHB) are spatially associated with Carboniferous peraluminous leucogranites.
Ballouard, C. +10 more
core +3 more sources
The Anatomical Record, EarlyView.Abstract Neandertals are known to possess very distinctive traits in their bony labyrinth morphology, such as an inferiorly positioned posterior canal and a very low number of turns in the cochlea. Hence, the inner ear has been often used to assess the Neandertal status of fragmentary fossils.
Alessandro Urciuoli +6 more
wiley +1 more source
Spreadsheets in Education, 2010 Radiometric dating is introduced to beginning students in a real-world fashion through animated spreadsheets. Students discover the behavior of the parent-daughter relationship in radioactive decay, how the parent-daughter ratio yields the age, and a ...
Scott A Sinex
doaj +2 more sources
Geological Survey of Denmark and Greenland Bulletin, 2019 Titanite (CaTiSiO5) occurs as a rare mineral in magmatic and metamorphic rocks. It is commonly found in clastic sedimentary rocks as an accessory heavy mineral – a mineral of high density.
Rikke Weibel, Tonny B Thomsen
doaj +1 more source
The Chronology of the Levantine Middle Palaeolithic Period in Retrospect
Bulletins et Mémoires de la Société d’Anthropologie de Paris, 2001 During the last 20 years, in the context of new interdisciplinary research projects in the Near East, significant changes have emerged in our ideas about the origin and early evolution of Modern Humans.
Ofer Bar-Yosef, Liliane Meignen
doaj +1 more source
Application of palynological data to the chronology of the Palaeogene lava fields of the British Province: implications for magmatic stratigraphy [PDF]
, 1997 New high-precision ages, determined from palynomorph assemblages within intercalated sedimentary deposits, are presented for the Palaeogene lava fields (Skye, Mull and Antrim) of the British Province. These data reveal very rapid averaged eruption rates (
Bell, B.R., Jolley, D.W.
core +1 more source
The Anatomical Record, EarlyView.Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro +7 more
wiley +1 more source
Radiometric dating of sediment records in European mountain lakes
Journal of Limnology, 2000 Sediment cores from seven European mountain lakes collected as part of a study of palaeolimnogical records of climate change (the MOLAR project) were dated radiometrically by 210Pb.
Peter G. APPLEBY
doaj +1 more source