K
Kevin W. Mandernack
Researcher at Colorado School of Mines
Publications - 27
Citations - 2285
Kevin W. Mandernack is an academic researcher from Colorado School of Mines. The author has contributed to research in topics: Sulfate & Isotope fractionation. The author has an hindex of 19, co-authored 27 publications receiving 2041 citations. Previous affiliations of Kevin W. Mandernack include Indiana University – Purdue University Indianapolis & Japan Atomic Energy Agency.
Papers
More filters
Journal ArticleDOI
Obliquity-paced Pliocene West Antarctic ice sheet oscillations
Tim R Naish,Tim R Naish,Ross D. Powell,Richard H. Levy,Richard H. Levy,Gary S. Wilson,Reed P. Scherer,Franco M Talarico,Lawrence A. Krissek,Frank Niessen,Massimo Pompilio,Terry J. Wilson,Lionel Carter,Robert M. DeConto,Peter Huybers,Robert M. McKay,David Pollard,James Ross,D. Winter,Peter Barrett,Greg H. Browne,Rosemary Cody,Rosemary Cody,Ellen A. Cowan,James S. Crampton,Gavin B. Dunbar,Nelia W. Dunbar,Fabio Florindo,Catalina Gebhardt,Ian J. Graham,M. J. Hannah,Dhiresh Hansaraj,Dhiresh Hansaraj,David M. Harwood,D. Helling,Stuart Henrys,Linda A. Hinnov,Gerhard Kuhn,Philip R. Kyle,Andreas Läufer,P. Maffioli,Diana Magens,Kevin W. Mandernack,William C. McIntosh,C. Millan,Roger H. Morin,Christian Ohneiser,Timothy Paulsen,Davide Persico,Ian Raine,J. Reed,J. Reed,Christina R. Riesselman,Leonardo Sagnotti,Douglas R. Schmitt,Charlotte Sjunneskog,P. Strong,Marco Taviani,S. W. Vogel,T. I. Wilch,Trevor Williams +60 more
TL;DR: A marine glacial record from the upper 600 m of the AND-1B sediment core recovered from beneath the northwest part of the Ross ice shelf is presented and well-dated, ∼40-kyr cyclic variations in ice-sheet extent linked to cycles in insolation influenced by changes in the Earth’s axial tilt (obliquity) during the Pliocene are demonstrated.
Journal ArticleDOI
Oxygen and sulfur isotope systematics of sulfate produced by bacterial and abiotic oxidation of pyrite
TL;DR: In this paper, a series of pyrite oxidation experiments in the laboratory were conducted under aerobic conditions by using O2 as an oxidizing agent and under anaerobic conditions using dissolved Fe(III)aq as oxidant with varying δ18OH2O values in the presence and absence of acidithiobacillus ferrooxidans.
Journal ArticleDOI
Iron isotope fractionation during microbially stimulated Fe(II) oxidation and Fe(III) precipitation
Nurgul Balci,Nurgul Balci,Thomas D. Bullen,Kerstin Witte-Lien,Wayne C. Shanks,Mikael Motelica,Kevin W. Mandernack +6 more
TL;DR: In this paper, the authors compared 56 Fe/ 54 Fe ratios of coexisting aqueous iron (Fe(II) aq, Fe(III) ppt ) and iron oxyhydroxide precipitates resulting from the oxidation of ferrous iron under experimental conditions at low pH ( Acidothiobacillus ferrooxidans and sterile controls).
Journal ArticleDOI
Oxygen and iron isotope studies of magnetite produced by magnetotactic bacteria
TL;DR: With the fractionation curve established in this report, oxygen-18 isotope values of bacterial Fe(3)O(4) may be useful in paleoenvironmental studies for determining the oxygen- 18 isotopevalues of formation waters and for inferring paleotemperatures.
Journal ArticleDOI
Subsurface Microbial Diversity in Deep-Granitic-Fracture Water in Colorado
Jason W. Sahl,Raleigh Schmidt,Elizabeth D. Swanner,Kevin W. Mandernack,Alexis S. Templeton,Thomas L. Kieft,Richard L. Smith,William E. Sanford,Robert L. Callaghan,Jeffry B. Mitton,John R. Spear +10 more
TL;DR: Lineage-specific comparisons, combined with phylogenetic statistical analyses, show that geochemical variance has an important effect on microbial community structure in deep, subsurface systems.