Laboratory experiments have established that many earth materials are strongly anisotropic. Observations of azimuthal and radial anisotropy in the upper mantle are attributed to the lattice-preferred orientation (LPO) of olivine caused by the shear strains associated with deformation, and provide some of the most direct evidence for deformation and flow within Earth’s interior. Although observa...

The Open University's repository of research publications and other research outputs Testing the Cenozoic multisite composite ¡sup¿18¡/sup¿O and ¡sup¿13¡/sup¿C curves: new monospecific Eocene records from a single locality, Demerara Rise (Ocean Drilling Program Leg 207) Journal Article (2006). Testing the Cenozoic multisite composite 18O and 13C curves: new monospecific Eocene records from a si...

Abstract The present topography of Tian Shan is related to the India-Asia collision, whereas mechanisms for topographic growth remain at center debate partly due poorly constrained onset timing Cenozoic tectonic deformation. Our new apatite (U-Th)/He (AHe) data in northern Chinese suggest that rapid cooling commenced 20.2±4.9 Ma along margin, which consistent with published fission-track from s...

Regional-scale fault systems are important in adjusting intracontinental deformation. Closure of the Paleo-Tethys, Paleo-Pacific subduction, and India-continent-continent collision have all interacted to shape Meso-Cenozoic tectonics South China. The Ziyun-Luodian (ZLF) straddles across Guizhou region southwestern New petrographic structural studies were conducted reveal evolution ZLF regional ...

Two new fossil species based on the study of wood remains and leaf imprints from middle Eocene Çekerek Formation (central-northern part Turkey) are assigned to palm family Arecaceae. Standard thin sections two samples were investigated identified as Palmoxylon sabaloides Greguss 1969, with close xylotomical affinities modern genus Sabal Adans. The weakly costapalmate correspond well. Based shor...

Abstract The Hammerfest Basin is an east–west-trending graben located between the Loppa High and Finnmark Platform in southern part of Norwegian Barents Sea. Mainly siliciclastic strata Carboniferous–Cenozoic age cover Caledonian basement have a total estimated thickness 5–8 km. basin evolved through several tectonic phases: Carboniferous rifting, Late Jurassic opening Atlantic Ocean, Oligocene...

[1] The Pacific Ocean has played a major role in climate evolution throughout the Cenozoic (65–0 Ma). It is a fundamental component of global heat transport and circulation, the dominant locus of primary productivity, and, consequently, the largest reservoir for carbon exchange between the oceans and the atmosphere. A satisfactory understanding of the Cenozoic evolutionary history of the Pacifi...

The Cape Roberts Project was successfully completed in the austral spring of 1999 with drilling of the 939.42-m CRP-3 drillhole, located 2-km west of the CRP-2/2A drillhole. The CRP-3 core comprises a 790-m Cenozoic (glacio-) marine sequence separated from underlying Devonian basement rocks by a c. 30-mthick dolerite conglomerate of undetermined age. Here, we present the results of a palaeomagn...

South America has some of the most diverse floras and insect faunas that are known, but its Cenozoic fossil record of insects and insect herbivory is sparse. We quantified insect feeding on 3,599 leaves from the speciose Laguna del Hunco flora (Chubut, Argentina), which dates to the early Eocene climatic optimum (52 million years ago) and compared the results with three well preserved, rich, an...

Magnesium/calcium data from Southern Ocean planktonic foraminifera demonstrate that high-latitude (approximately 55 degrees S) southwest Pacific sea surface temperatures (SSTs) cooled 6 degrees to 7 degrees C during the middle Miocene climate transition (14.2 to 13.8 million years ago). Stepwise surface cooling is paced by eccentricity forcing and precedes Antarctic cryosphere expansion by appr...