Search Results - "Lees, Jackie A"

Evidence for global cooling in the Late Cretaceous by Linnert, Christian, Robinson, Stuart A., Lees, Jackie A., Bown, Paul R., Pérez-Rodríguez, Irene, Petrizzo, Maria Rose, Falzoni, Francesca, Littler, Kate, Arz, José Antonio, Russell, Ernest E.

“…The Late Cretaceous ‘greenhouse’ world witnessed a transition from one of the warmest climates of the past 140 million years to cooler conditions, yet still…”
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The Cenomanian–Turonian Eagle Ford Group of South Texas: Insights on timing and paleoceanographic conditions from geochemistry and micropaleontologic analyses by Denne, Richard A., Hinote, Russell E., Breyer, John A., Kosanke, Tobi H., Lees, Jackie A., Engelhardt-Moore, Nancy, Spaw, Joan M., Tur, Nataliya

“…The interbedded organic-rich marls and limestones of the Eagle Ford Group of South Texas were deposited on the shelf of the Central Texas Platform during the…”
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Problems with proxies? Cautionary tales of calcareous nannofossil paleoenvironmental indicators by Lees, Jackie A, Bown, Paul R, Mattioli, Emanuela

“…Many studies relating to long-term global change and climate variability rely on proxy data from fossils and geochemistry to reconstruct paleoenvironments…”
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Calcareous nannofossil biogeography illustrates palaeoclimate change in the Late Cretaceous Indian Ocean by Lees, Jackie A.

“…Late Cretaceous calcareous nannofossil taxa, their distributions and relative abundances were recorded from nine Indian Ocean sites. The majority of taxa are…”
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Evidence for annual records of phytoplankton productivity in the Kimmeridge Clay Formation coccolith stone bands (Upper Jurassic, Dorset, UK) by Lees, Jackie A., Bown, Paul R., Young, Jeremy R., Riding, James B.

“…The Upper Jurassic Kimmeridge Clay Formation is a C org-rich sequence of mudrocks that was deposited in a dysoxic basin, which served, unusually, to preserve…”
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The Maastrichtian record from Shatsky Rise (northwest Pacific): A tropical perspective on global ecological and oceanographic changes by Frank, Tracy D., Thomas, Deborah J., Leckie, R. Mark, Arthur, Michael A., Bown, Paul R., Jones, Kelly, Lees, Jackie A.

“…We present new isotopic and micropaleontological data from a depth transect on Shatsky Rise that record the response of the tropical Pacific to global biotic…”
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Pioneer nannofossil assemblages from the initial transgression of the Niobrara seaway in the Turonian, San Juan Basin, New Mexico, USA by Schueth, Jonathan D., Lees, Jackie A.

“…Nannofossils of the North American Late Cretaceous Western Interior Seaway have been extensively studied, but these investigations have primarily focused on…”
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Reply to comment from Nicolas Thibault (manuscript number PALAEO_2017_678) by Lees, Jackie A., Leckie, R. Mark, Dameron, Serena N.

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Extinction, dissolution, and possible ocean acidification prior to the Cretaceous/Paleogene (K/Pg) boundary in the tropical Pacific by Dameron, Serena N., Leckie, R. Mark, Clark, Kendra, MacLeod, Kenneth G., Thomas, Deborah J., Lees, Jackie A.

“…Biotic perturbations and changes in ocean circulation during the Maastrichtian stage of the latest Cretaceous raise questions about whether the biosphere was…”
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The calcareous nannofossil record across the Late Cretaceous Turonian/Coniacian boundary, including new data from Germany, Poland, the Czech Republic and England by Lees, Jackie A.

“…The proposed definition of the Turonian/Coniacian boundary, at the first occurrence of the inoceramid bivalve Cremnoceramus deformis erectus (Meek) (=…”
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Photic zone palaeoenvironments of the Kimmeridge Clay Formation (Upper Jurassic, UK) suggested by calcareous nannoplankton palaeoecology by Lees, Jackie A., Bown, Paul R., Young, Jeremy R.

“…Nannoplankton abundance data has revealed significant and systematic population fluxes through all representative lithologies and cycle types of the Kimmeridge…”
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Stratigraphy and sedimentology of the Upper Cretaceous to Paleogene Kilwa Group, southern coastal Tanzania by Nicholas, Christopher J., Pearson, Paul N., Bown, Paul R., Jones, Tom Dunkley, Huber, Brian T., Karega, Amina, Lees, Jackie A., McMillan, Ian K., O’Halloran, Aoife, Singano, Joyce M., Wade, Bridget S.

“…The geology of southern coastal Tanzania has remained poorly understood since the first comments on its stratigraphy were made over 100 years ago. However, new…”
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Paleogene and Cretaceous sediment cores from the Kilwa and Lindi areas of coastal Tanzania: Tanzania Drilling Project Sites 1–5 by Pearson, Paul N., Nicholas, Christopher J., Singano, Joyce M., Bown, Paul R., Coxall, Helen K., van Dongen, Bart E., Huber, Brian T., Karega, Amina, Lees, Jackie A., Msaky, Emma, Pancost, Richard D., Pearson, Marion, Roberts, Andrew P.

“…Initial results of scientific drilling in southern coastal Tanzania are described. A total of five sites was drilled (mostly using continuous coring) by the…”
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Further Paleogene and Cretaceous sediment cores from the Kilwa area of coastal Tanzania: Tanzania Drilling Project Sites 6–10 by Pearson, Paul N., Nicholas, Christopher J., Singano, Joyce M., Bown, Paul R., Coxall, Helen K., van Dongen, Bart E., Huber, Brian T., Karega, Amina, Lees, Jackie A., MacLeod, Kenneth, McMillan, Ian K., Pancost, Richard D., Pearson, Marion, Msaky, Emma

“…Initial results from scientific drilling in southern coastal Tanzania are described. In a field season in 2003, a total of five sites was drilled (mostly using…”
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Calcareous nannofossil palaeoecology and palaeoceanographic reconstruction by Villa, Giuliana, Lees, Jackie A., Bown, Paul R.

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