Search Results - "Renaut, Robin W."

Environmental dynamics during the onset of the Middle Stone Age in eastern Africa by Potts, Richard, Behrensmeyer, Anna K, Faith, J Tyler, Tryon, Christian A, Brooks, Alison S, Yellen, John E, Deino, Alan L, Kinyanjui, Rahab, Clark, Jennifer B, Haradon, Catherine M, Levin, Naomi E, Meijer, Hanneke J M, Veatch, Elizabeth G, Owen, R Bernhart, Renaut, Robin W

“…Development of the African Middle Stone Age (MSA) before 300,000 years ago raises the question of how environmental change influenced the evolution of…”
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Impact of lake-level changes on the formation of thermogene travertine in continental rifts: Evidence from Lake Bogoria, Kenya Rift Valley by RENAUT, ROBIN W., OWEN, R. BERNHART, JONES, BRIAN, TIERCELIN, JEAN-JACQUES, TARITS, CORINNE, EGO, JOHN K., KONHAUSER, KURT O.

“…Travertine is present at 20% of the ca 60 hot springs that discharge on Loburu delta plain on the western margin of saline, alkaline Lake Bogoria in the Kenya…”
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Microstructural changes accompanying the opal-A to opal-CT transition: new evidence from the siliceous sinters of Geysir, Haukadalur, Iceland by JONES, BRIAN, RENAUT, ROBIN W.

“…Opaline silica (opal‐A) has formed in marine, lacustrine and geothermal environments throughout geological time. During diagenesis opal‐A normally changes to…”
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Quaternary geochemical stratigraphy of the Kedong–Olorgesailie section of the southern Kenya Rift valley by Owen, R. Bernhart, Renaut, Robin W., Behrensmeyer, Anna K., Potts, Richard

“…This study uses a variety of geochemical parameters to reconstruct a Quaternary environmental history of the Kedong–Olorgesailie sector of the southern Kenya…”
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The Microbial Role in Hot Spring Silicification by Konhauser, Kurt O, Jones, Brian, Phoenix, Vernon R, Ferris, Grant, Renaut, Robin W

“…Recent experimental studies indicate that microorganisms play a passive role in silicification. The organic functional groups that comprise the outer cell…”
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Mineralized microbes from Giggenbach submarine volcano by Jones, Brian, de Ronde, C. E. J., Renaut, Robin W.

“…The Giggenbach submarine volcano, which forms part of the Kermadec active arc front, is located ∼780 km NNE of the North Island of New Zealand. Samples…”
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Growth patterns and implications of complex dendrites in calcite travertines from Lýsuhóll, Snæfellsnes, Iceland by JONES, BRIAN, RENAUT, ROBIN W., BERNHART OWEN, R., TORFASON, HELGI

“…Calcite dendrite crystals are important but poorly understood components of calcite travertine that forms around many hot springs. The Lýsuhóll hot‐spring…”
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Progressive aridification in East Africa over the last half million years and implications for human evolution by Owen, R. Bernhart, Muiruri, Veronica M., Lowenstein, Tim K., Renaut, Robin W., Rabideaux, Nathan, Luo, Shangde, Deino, Alan L., Sier, Mark J., Dupont-Nivet, Guillaume, McNulty, Emma P., Leet, Kennie, Cohen, Andrew, Campisano, Christopher, Deocampo, Daniel, Shen, Chuan-Chou, Billingsley, Anne, Mbuthia, Anthony

“…Evidence for Quaternary climate change in East Africa has been derived from outcrops on land and lake cores and from marine dust, leaf wax, and pollen records…”
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Modern travertine precipitation at Lysuholl Hot Springs, Snaefellnes, Iceland; implications for calcite crystal growth by Jones, Brian, Renaut, Robin W

“…Three thermal springs, at Lysuholl on Snaefellnes Peninsula on the west coast of Iceland, with vent water temperatures of 20 to 46°C are characterized by…”
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Genesis of large siliceous stromatolites at Frying Pan Lake, Waimangu geothermal field, North Island, New Zealand by JONES, BRIAN, RENAUT, ROBIN W., KONHAUSER, KURT O.

“…Lilypad stromatolites, up to 3 m long and 1·5 m wide, were found to be actively growing in the shallow marginal waters of Frying Pan Lake and its outflow…”
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The Green River salt mystery: What was the source of the hyperalkaline lake waters? by Lowenstein, Tim K., Jagniecki, Elliot A., Carroll, Alan R., Smith, M. Elliot, Renaut, Robin W., Owen, R. Bernhart

“…Bicarbonate-rich source waters were needed to form the largest sodium carbonate evaporite deposits in the geologic record, the early and middle Eocene Green…”
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The role of hydrothermal fluids in sedimentation in saline alkaline lakes: Evidence from Nasikie Engida, Kenya Rift Valley by Renaut, Robin W., Owen, R. Bernhart, Lowenstein, Tim K., De Cort, Gijs, Mcnulty, Emma, Scott, Jennifer J., Mbuthia, Anthony

“…Saline alkaline lakes that precipitate sodium carbonate evaporites are most common in volcanic terrains in semi‐arid environments. Processes that lead to trona…”
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Biogenicity of silica precipitation around geysers and hot-spring vents, North Island, New Zealand by Jones, Brian, Renaut, Robin W, Rosen, Michael R

“…Before anthropogenic modifications, Ohaaki Pool (Broadlands-Ohaaki) and Dragon's Mouth Geyser (Wairakei) emitted waters at temperatures of 93-98°C. The…”
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Animal bioturbation preserved in Pleistocene magadiite at Lake Magadi, Kenya Rift Valley, and its implications for the depositional environment of bedded magadiite by Buatois, Luis A., Renaut, Robin W., Owen, Richard Bernhart, Behrensmeyer, Anna K., Scott, Jennifer J.

“…Magadiite, a rare hydrous sodium-silicate mineral [NaSi 7 O 13 (OH) 3 ·4(H 2 O)], was discovered about 50 years ago in sediments around Lake Magadi, a…”
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Spatial and temporal geochemical variability in lacustrine sedimentation in the East African Rift System: Evidence from the Kenya Rift and regional analyses by Owen, Richard Bernhart, Renaut, Robin W., Lowenstein, Tim K., Brasier, Alexander

“…Many previous studies on lacustrine basins in the East African Rift System have directed their attention to climatic controls on contemporary sedimentation or…”
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Quaternary history of the Lake Magadi Basin, southern Kenya Rift: Tectonic and climatic controls by Bernhart Owen, R., Renaut, Robin W., Muiruri, Veronica M., Rabideaux, Nathan M., Lowenstein, Tim K., McNulty, Emma P., Leet, Kennie, Deocampo, Daniel, Luo, Shangde, Deino, Alan L., Cohen, Andrew, Sier, Mark J., Campisano, Christopher, Shen, Chuan-Chou, Billingsley, Anne, Mbuthia, Anthony, Stockhecke, Mona

“…Sediments from the Magadi Basin (south Kenya Rift) preserve a one-million-year palaeoenvironmental record that reflects interactions between climatic, volcanic…”
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Paleoecology and sedimentology of a vertebrate microfossil assemblage from the easternmost Dinosaur Park Formation (Late Cretaceous, Upper Campanian,) Saskatchewan, Canada: Reconstructing diversity in a coastal ecosystem by Gilbert, Meagan M., Bamforth, Emily L., Buatois, Luis A., Renaut, Robin W.

“…A ~42 m section of Late Cretaceous Upper Campanian sediments in Saskatchewan Landing Provincial Park, southwestern Saskatchewan, Canada, represents the…”
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Increased ecological resource variability during a critical transition in hominin evolution by Potts, Richard, Dommain, René, Moerman, Jessica W, Behrensmeyer, Anna K, Deino, Alan L, Riedl, Simon, Beverly, Emily J, Brown, Erik T, Deocampo, Daniel, Kinyanjui, Rahab, Lupien, Rachel, Owen, R Bernhart, Rabideaux, Nathan, Russell, James M, Stockhecke, Mona, deMenocal, Peter, Faith, J Tyler, Garcin, Yannick, Noren, Anders, Scott, Jennifer J, Western, David, Bright, Jordon, Clark, Jennifer B, Cohen, Andrew S, Keller, C Brehnin, King, John, Levin, Naomi E, Brady Shannon, Kristina, Muiruri, Veronica, Renaut, Robin W, Rucina, Stephen M, Uno, Kevin

“…Although climate change is considered to have been a large-scale driver of African human evolution, landscape-scale shifts in ecological resources that may…”
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An unusual occurrence of the trace fossil Vagorichnus preserved in hydrothermal silica at Lake Baringo, Kenya Rift Valley: Taphonomic and paleoenvironmental significance by Buatois, Luis A., Renaut, Robin W., Scott, Jennifer J., Bernhart Owen, R.

“…An unusual occurrence of the ichnogenus Vagorichnus is documented in the sublacustrine hydrothermal silica cement of conglomerate at Lake Baringo in the…”
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Late-Holocene sedimentation and sodium carbonate deposition in hypersaline, alkaline Nasikie Engida, southern Kenya Rift Valley by De Cort, Gijs, Mees, Florias, Renaut, Robin W., Sinnesael, Matthias, Van der Meeren, Thijs, Goderis, Steven, Keppens, Edward, Mbuthia, Anthony, Verschuren, Dirk

“…Continental rift systems are often characterized by geothermal activity and associated discharge of hot groundwater, which can substantially impact the water,…”
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