Zobrazeno 1 - 10
of 27
pro vyhledávání: '"R. B. Owen"'
Autor:
A. Cohen, C. Campisano, R. Arrowsmith, A. Asrat, A. K. Behrensmeyer, A. Deino, C. Feibel, A. Hill, R. Johnson, J. Kingston, H. Lamb, T. Lowenstein, A. Noren, D. Olago, R. B. Owen, R. Potts, K. Reed, R. Renaut, F. Schäbitz, J.-J. Tiercelin, M. H. Trauth, J. Wynn, S. Ivory, K. Brady, R. O'Grady, J. Rodysill, J. Githiri, J. Russell, V. Foerster, R. Dommain, S. Rucina, D. Deocampo, A. Billingsley, C. Beck, G. Dorenbeck, L. Dullo, D. Feary, D. Garello, R. Gromig, T. Johnson, A. Junginger, M. Karanja, E. Kimburi, A. Mbuthia, T. McCartney, E. McNulty, V. Muiruri, E. Nambiro, E. W. Negash, D. Njagi, J. N. Wilson, N. Rabideaux, T. Raub, M. J. Sier, P. Smith, J. Urban, M. Warren, M. Yadeta, C. Yost, B. Zinaye
Publikováno v:
Scientific Drilling, Vol 21, Pp 1-16 (2016)
The role that climate and environmental history may have played in influencing human evolution has been the focus of considerable interest and controversy among paleoanthropologists for decades. Prior attempts to understand the environmental history
Externí odkaz:
https://doaj.org/article/f8e33abe791a4f3396dcc66ab9e7485f
Autor:
Daniel Gebregiorgis, Alan L. Deino, Chuan-Chou Shen, Robin W. Renaut, Nathan M. Rabideaux, Anthony Mbuthia, R. B. Owen, Christopher J. Campisano, Anne L. Billingsley, Mark Jan Sier, Andrew S. Cohen, Tim K. Lowenstein, Daniel M. Deocampo, Shangde Luo
Publikováno v:
Geology. 50:42-47
Lake Magadi is an internally drained, saline and alkaline terminal sump in the southern Kenya Rift. Geochemistry of samples from an ~200 m core representing the past ~1 m.y. of the lake's history shows some of the highest concentrations of transition
Autor:
Anthony Mbuthia, Robin W. Renaut, Anne L. Billingsley, Tim K. Lowenstein, Kennie Leet, Veronica M. Muiruri, Nathan M. Rabideaux, R. B. Owen, Christopher J. Campisano, Dan Deocampo, Andrew S. Cohen, Mark Jan Sier, Gijs De Cort
Publikováno v:
Journal of Paleolimnology. 65:315-333
Two cores were recovered from the Lake Magadi and Nasikie Engida Basins in the south Kenya Rift. Core MAG14-2A (194 m) contains a middle Pleistocene to Holocene record, whereas core NAS15/19 (4.36 m) covers only the late Holocene. Surficial sediments
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-13 (2020)
Scientific Reports
Scientific Reports
Magadiite, a rare hydrous sodium-silicate mineral [NaSi7O13(OH)3·4(H2O)], was discovered about 50 years ago in sediments around Lake Magadi, a hypersaline alkaline lake fed by hot springs in the semi-arid southern Kenya Rift Valley. Today this harsh
Publikováno v:
Journal of African Earth Sciences. 162:103703
The sedimentary and biological material preserved in wetlands in semi-arid regions provide a rich repository of paleoclimate and paleoecological archives. These records reflect an underutilized, but typically ignored paleoenvironmental resource in se
Publikováno v:
Quaternary Research. 76:167-179
The Olorgesailie Formation (1.2–0.49 Ma) consists of fluvial and lacustrine rift sediments that have yielded abundant Acheulean artifacts and a fossil hominin (Homo cf. erectus). In testing prior understandings of the paleoenvironmental context, we
Publikováno v:
Journal of Paleolimnology. 44:343-359
Several lacustrine basins were formed by late Miocene tectonic processes in western Macedonia, Greece. These were occupied by a series of lakes and wetland swamps during the late Miocene and early Pliocene giving rise to diatomaceous claystones, silt
Publikováno v:
Asian Geographer. 27:43-57
This paper presents a review of the 400-million-year geological history of Hong Kong as preserved in rocks exposed at the surface. These lithologies were formed during four major geophases. Terrestrial and marine environments are represented by rocks
Autor:
Robin W. Renaut, Gail M. Ashley, Jennifer J. Scott, Brian Jones, R. B. Owen, Richard Alastair Owen
Publikováno v:
Sedimentary Geology. 203:143-163
A wide range of rhizoliths occurs around the margins of Lake Bogoria, Kenya. These include root casts, moulds, tubules, rhizocretions, and permineralised root systems. These rhizoliths are variably composed of opaline silica, calcite, zeolites (mainl
Publikováno v:
Journal of the Geological Society. 164:227-242
Chimneys around hydrothermal vents at a depth of c. 140 m in the Horomatangi Reefs area in Lake Taupo, New Zealand, are composed of amorphous silica (opal-A) with lesser amounts of Mn-, Fe-, and Hg-rich precipitates. Detrital quartz and feldspar grai