Results 21 to 30 of about 3,163 (215)

Foraminifers in the Holkerian Stratotype, regional substage in Britain : key taxa for the Viséan subdivision [PDF]

, 2022
Foraminiferal revision of the Holkerian Stratotype of Britain at Barker Scar, Holker Hall, south Cumbria, UK, allows the subdivision of the section into the Cf4δ, Cf5α and Cf5β subzones (the latter being further subdivided into lower Cf5β1 and upper ...
Cozar, Pedro, Hounslow, Mark W, Somerville, Ian D   +2 more
core   +2 more sources

The Gargasian (Middle Aptian) of La Tuilière - St-Saturnin-lès-Apt (area of the Aptian historical stratotype, Vaucluse, SE France): geographic setting and outcrop correlation

Carnets de Géologie, 2006
A stratonomic and micropaleontological analysis of the Aptian marls cropping out in the La Tuilière area near Saint-Saturnin-lès-Apt (Vaucluse, SE France), enabled us to reconstitute a continuous succession almost 120 m thick, that includes the upper ...
Moullade Michel, Tronchetti Guy, Balme Christine, Kouyoumontzakis Georges   +3 more
doaj   +1 more source

Sedimentary Ancient DNA Tracks Multi-Kingdom Ecosystem Reorganizations Following Sequential Human Land Use at Crawford Lake. [PDF]

Mol Ecol
ABSTRACT Crawford Lake has an exceptional stratigraphic record that began recording biannual (varved) sedimentation in the lake basin ~750 years ago, preserving evidence of shifting cultural zones and agricultural practices, from Late Woodland Period Indigenous agriculturalists to the impacts of industrialization during the late 19th century.
Murchie TJ, Emery MV, Cocker SL, Natola L, Kuch M, Rutledge LY, McCarthy F, Pisaric MFJ, Poinar HN.   +8 more
europepmc   +2 more sources

The Global Stratotype Section and Point (GSSP) for the base of the Holocene Series/Epoch (Quaternary System/Period) in the NGRIP ice core [PDF]

, 2008
The Greenland ice core from NorthGRIP (NGRIP) contains a proxy climate record across the Pleistocene– Holocene boundary of unprecedented clarity and resolution.
Rasmussen, Sune Olander, Hoek, Wim Z., Steffensen, Jørgen Peder, Johnsen, Sigfus Johann, Steffensen, J. P., Rasmussen, Sune Ander, Steffensen, Jorgen-Peder, Schwander, Jakob, Andrews, John, Hoek, Wim, Walker, Mike, Gibbard, Philip, Hughen, Konrad, Walker, M., Litt, T., Kershaw, P., Johnsen, Sigfus, Kershaw, Peter, Popp, T., Steffensen, Jørgen-Peder, Hughen, K., Björck, Svante, Johnsen, Sigfu's, Lowe, J., Newnham, R., Kromer, Bernd, Nakagawa, Takeshi, Lowe, D. J., Popp, Trevor James, Lowe, J. John, Schwande, J., Cwynar, L., Newnham, Rewi, Newnham, Rewi M., Rasmussen, S. O., Popp, Trevor, Hoek, W., Cwynar, Les C., Lowe, David J., Nakagawa, T., Litt, Thomas, Lowe, John, Hughen, Konrad A., Kromer, B., Johnsen, S., Gibbard, P., Andrews, J., Cwynar, Les, Bjorck, S.   +48 more
core   +2 more sources

High resolution carbon isotope stratigraphy of the basal Silurian stratotype (Dob's Linn, Scotland) and its global correlation [PDF]

, 1997
Since its designation as the Global Stratotype Section and Point (GSSP) for the base of the Silurian System, the choice of Dob's Linn, Southern Scotland, has received criticism due to the difficulties of relating its well constrained graptolite ...
Marshall, J.D., Brenchley, P., Underwood, Charlie J., C. J. Underwood, S. F. Crowley, Crowley, S., Marshall, J., J. D. Marshall, Crowley, S.F., P. J. Brenchley, Brenchley, P.J.   +10 more
core   +1 more source

Uranium Isotope Evidence for Persistent Global Ocean Anoxia Across the Ediacaran-Cambrian Transition in Siberia. [PDF]

Geobiology
ABSTRACT The enigmatic Ediacara biota represents Earth's earliest example of macroscopic, complex life, yet the driving forces promoting their mid‐Ediacaran evolution and subsequent extinction across the Ediacaran–Cambrian boundary remain speculative. If these were true animals requiring oxygen for aerobic respiration, their rise has often been linked ...
Doerrler AD, Gan T, Gilleaudeau GJ, Pedersen MG, Bykova N, Marusin V, Ivanova NA, Kochnev B, Grazhdankin DV, Kletetschka K, Kaufman AJ.   +10 more
europepmc   +2 more sources

The Ordovician System: From overlapping unit stratotypes to Global Boundary Stratotype Sections and Points

Estonian Journal of Earth Sciences, 2023
For nearly a century the Ordovician System was hidden as Murchison and Sedgwick tussled over the overlapping ground between their Silurian and Cambrian systems. The Ordovician is, in fact, one of the longest of the geological periods, characterised by major magmatic and plate tectonic activity; the roles of microcontinents and volcanic archipelagos ...
David A. T. Harper, Tõnu Meidla, Thomas Servais   +2 more
openaire   +2 more sources

Lower miocene stratigraphy of the Eastern Paratethys: Problems and state of the art [PDF]

Geološki Anali Balkanskoga Poluostrva
The Lower Miocene regional stages of the Eastern Paratethys, the Caucasian, Sakaraulian, and Kozakhurian, have been recognized in different structural facies zones of the basin and have no reliable universal stratigraphic basis for defining their ...
Golovina Larisa, Aleksandrova Galina, Popov Sergey, Bylinskaya Marina, Koiava Kakhaber, Pinchuk Tatyana   +5 more
doaj   +1 more source

Evaluation of the Rb/Sr ratio as an indicator of chemical weathering: a case study from five sedimentary sections in Northeast China

Boreas, EarlyView.
Chemical weathering plays a pivotal role in the Earth's surface material cycle and global climate regulation. It not only facilitates the reconstruction of palaeoclimate characteristics but also provides essential insights into Earth's evolutionary history.
Zhenyu Wei, Yuanyun Xie, Jie Meng, Lei Sun, Chunguo Kang, Yunping Chi, Peng Wu, Haijin Liu, Ruonan Liu, Ruitong Chang   +9 more
wiley   +1 more source

THE PROTECTION OF JURASSIC SITES AND FOSSILS: CHALLENGES FOR GLOBAL JURASSIC SCIENCE (INCLUDING A PROPOSED STATEMENT ON THE CONSERVATION OF PALAEONTOLOGICAL HERITAGE AND STRATOTYPES)

Rivista Italiana di Paleontologia e Stratigrafia, 2004
Effective geoconservation systems are crucial to the activities of subcommissions of the International Subcommission on Stratigraphy, such as the Jurassic Subcommission (ISJS).
KEVIN N. PAGE
doaj   +1 more source