Results 81 to 90 of about 67,849 (308)

Columnanidus calitzdorpensis ichnogen. ichnosp. nov: A new Middle Pleistocene subterranean termite trace fossil from South Africa

Journal of Quaternary Science, EarlyView.
ABSTRACT Termites are landscape geo‐engineers whose nesting activities substantially modify the physical and chemical properties of soils. Fossilised termite nests commonly constitute the only identifiable evidence of ancient termite activity and represent valuable trace fossil archives for reconstructing past environments.
Miengah Abrahams, Robert A. Muir, Jorge F. Genise, John E. Almond, Gcinamahlubi Hadebe, John C. Hellstrom, Rabia Jacobs, Chris Harris   +7 more
wiley   +1 more source

Miocene rodent evolution and migration. Muroidea from Pakistan, Turkey and Northern Africa. Geologica Ultraiectina (307)

, 2009
Detailed research on fossil rodents from Pakistan, Turkey, northern Africa and Europe provides a better understanding of the evolutionary history of the Muroidea, especially of the Murinae, Myocricetodontinae and Rhizomyinae.
Wessels, W., Small mammals from the Lower and Middle Miocene of Sind (Pakistan), Vertebraten Paleontologie, Stratigraphy and paleontology   +3 more
core  

High-precision zircon U-Pb geochronology of astronomically dated volcanic ash beds from the Mediterranean Miocene

, 2014
Several orbitally tuned Miocene sedimentary sequences around the Mediterranean contain abundant intercalated volcanic ash beds. These sequences provide the rare opportunity to directly compare radioisotopic dating methods with independent and accurate ...
Wotzlaw, Jörn Frederik, NWO-VENI: Middle Miocene global cooling: climate change through gateway closure, Hilgen, Frederik J., Hüsing, Silja K., Wotzlaw, Joern Frederik, Schaltegger, Urs, Stratigraphy and paleontology, Paleomagnetism   +7 more
core   +1 more source

Recurrent phases of drought in the upper Miocene of the Black Sea region [PDF]

, 2015
Since the Miocene the Black Sea proved to be highly sensitive to fluctuations in the hydrological cycle because of its recurrent restricted connections with the open ocean and the location between the dry Mediterranean and more humid higher northern ...
Krijgsman, W., Grothe, A., Sinninghe Damsté, J.S., Weijers, Johan, Reichart, G.-J., Krijgsman, Wout, Sangiorgi, Francesca, Weijers, J.W.H, Vasiliev, I., Sangiorgi, F., Sinninghe Damste, Jaap, Vasiliev, Iuliana, Reichart, Gert-Jan, Grothe, Arjen, van Róij, L., van Roij, Linda   +15 more
core   +1 more source

Enhancing Rock Strength Prediction and Features Selection by Coupling Well Log Data and Deep Learning Approaches in Reservoir Geomechanics

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Accurate rock strength parameters play a vital role in petroleum and mining operations for sustainable drilling activities, and wellbore stability analysis. This study investigates the applicability of deep learning techniques for assessing data‐driven models, and to conduct parametric sensitivity examination for feature attributes ranking to ...
Mohammad Islam Miah, Md. Shakil Rahaman, Travis Wiens   +2 more
wiley   +1 more source

Significant Miocene larger foraminifera from South Central Java

, 2005
The Gunung Sewu area of South Central Java, Indonesia during Mid Miocene, Langhian-Serravallian (Tf1-Tf2), was deposited in a large area of warm, very shallow-marine water.
Boudagher-Fadel, MK, Lokier, SW
core  

Magnetostratigraphy of the Miocene continental deposits of the Montes de Castejón (central Ebro basin, Spain): geochronological and paleoenvironmental implications

, 2004
A detailed magnetostratigraphic study has been carried out in the early to middle Miocene distal alluvial and lacustrine sediments of the Montes de Castejón (central Ebro Basin).
Pardo Tirapu, Gonzalo, Pérez-Rivarés, Javier, Pérez-Rivarés, F. J., Pardo, G., Garcés Crespo, Miguel, Arenas, C., PÉREZ-RIVARÉS, F.J., GARCÉS, M., Arenas, Concha   +8 more
core   +1 more source

Biogeography and diversification patterns in the Irano‐Turanian biodiversity hotspots inferred from a molecular phylogeny of the subendemic Iris subgenus Scorpiris (Iridaceae)

Nordic Journal of Botany, EarlyView.
The Irano‐Turanian Floristic Region harbors a rich flora, but our understanding of the development of this diversity is limited by a lack of data on phylogenetic relationships and biogeographic patterns of endemic and more widespread plants. Hypotheses of in situ diversification versus allopatric diversification were tested using Iris subgen. Scorpiris,
Mona Salimbahrami, Hojjatollah Saeidi, Ali Bagheri, Carol A. Wilson, Gerald M. Schneeweiss   +4 more
wiley   +1 more source

Petrologic evidence for earliest Miocene tectonic mobility on eastern Taranaki Basin margin

, 2006
At Gibsons Beach on the west coast of central North Island, the earliest Miocene (Waitakian) Otorohanga Limestone, the top-most formation in the Te Kuiti Group, is unconformably overlain on an undulating, locally channelised erosion surface by the Early ...
Nelson, Campbell S., Hood, Steven D., Kamp, Peter J.J., Tripathi, Anand Ratnakar Prasad   +3 more
core  

Thermal history of the early Miocene Waitemata Basin and adjacent Waipapa Group, North Island, New Zealand

, 1999
Apatite fission track (AFT) and vitrinite reflectance (VR) data for early Miocene outcrops from the Waitemata Basin reveal that the basin sequence was subjected to shallow burial before denudation.
Kevin C. Hill, Hill, Kevin C., Asaf Raza, Raza, Asaf, Balance, Peter F., Kamp, Peter J.J., Brown, Roderick W., Peter F. Ballance, Peter J. J. Kamp, Roderick W. Brown   +9 more
core   +1 more source