A5073005619- Geology and Paleoclimatology Research
- Geological formations and processes
- Christian Theology and Mission
- Isotope Analysis in Ecology
- Religion, Society, and Development
- Pleistocene-Era Hominins and Archaeology
- Methane Hydrates and Related Phenomena
- Archaeology and ancient environmental studies
- Paleontology and Stratigraphy of Fossils
- Groundwater and Isotope Geochemistry
- Pentecostalism and Christianity Studies
- Marine and environmental studies
- Karst Systems and Hydrogeology
- Pacific and Southeast Asian Studies
- Biblical Studies and Interpretation
- Environmental and Cultural Studies in Latin America and Beyond
- Hydrocarbon exploration and reservoir analysis
- Hydraulic Fracturing and Reservoir Analysis
- Reservoir Engineering and Simulation Methods
- Drilling and Well Engineering
- Tree-ring climate responses
- Religious Tourism and Spaces
- Geological and Geophysical Studies Worldwide
- Coastal wetland ecosystem dynamics
- Theological Perspectives and Practices
University of Divinity
2020-2025
University of Massachusetts Amherst
2015-2024
University of Massachusetts Boston
2011-2023
University College Dublin
2020
BG Group (United Kingdom)
2017
Heinz Optical Engineering (United States)
2014-2016
Contextual Change (United States)
2005-2014
Episcopal Divinity School
2014
Charles Sturt University
2009
University of Bern
1994-2008
A high-resolution oxygen-isotope record from a thorium-uranium-dated stalagmite southern Oman reflects variations in the amount of monsoon precipitation for periods 10.3 to 2.7 and 1.4 0.4 thousand years before present (ky B.P.). Between 8 ky B.P., decadal centennial are phase with temperature fluctuations recorded Greenland ice cores, indicating that early Holocene intensity is largely controlled by glacial boundary conditions. After approximately decreases gradually response changing...
The fractionation factor (α) between the 18O/16O ratio in calcite and CO2 gas produced as a result of reaction with phosphoric acid has been determined function temperature for two most widely used variations dissolution technique, sealed vessel an bath. Although these methods show approximately same relationship α, they are offset from one another by 0.2 0.4% over range 25–90°C. There appears to be no temperature- or technique-dependent on carbon temperatures examined this study. difference...
Research Article| November 01, 2009 Timing and structure of the 8.2 kyr B.P. event inferred from δ18O records stalagmites China, Oman, Brazil Hai Cheng; Cheng * 1Department Geology Geophysics, University Minnesota, Minneapolis, Minnesota 55455, USA 7College Geography Science, Nanjing Normal University, Nanjing, China *E-mails: cheng021@umn.edu; fleitmann@geo.unibe.ch. Search for other works by this author on: GSW Google Scholar Dominik Fleitmann; Fleitmann 2Institute Geological Sciences,...
The climate of the Last Glacial period (10,000 to 110,000 years ago) was characterized by rapid millennial-scale fluctuations termed Dansgaard/Oeschger (D/O) and Heinrich events. We present results from a speleothem-derived proxy South American summer monsoon (SASM) 16,000 50,000 ago that demonstrate occurrence D/O cycles This tropical Southern Hemisphere reconstruction illustrates an antiphase relationship Northern intensity at millennial scale. Our also show influence Antarctic on SASM....
Oxygen-isotope ratios of a stalagmite from Socotra Island in the Indian Ocean provide record changes monsoon precipitation and climate for time period 42 to 55 thousand years before present. The pattern bears striking resemblance oxygen-isotope Greenland ice cores, with increased tropical associated warm periods high northern latitudes. largest change, at onset interstadial 12, occurred very rapidly, about 25 years. chronology events found our requires reevaluation previously published...
Abstract Speleothems from Hoti Cave in northern Oman provide a record of continental pluvial periods over the last 330,000 yr. Periods rapid speleothem deposition occurred 6000 to 10,500, 78,000 82,000, 120,000 135,000, 180,000 200,000, and 300,000 yr ago, with little or no growth during intervening periods. During each these five periods, δ D values water extracted fluid inclusions (δ FI ) are between −60 −20‰ (VSMOW) 18 O calcite C −12 −4‰ (VPDB). These much more negative than modern...
Research Article| July 01, 2001 Speleothem evidence from Oman for continental pluvial events during interglacial periods Stephen J. Burns; Burns 1Institute of Geology, University Bern, CH-3012 Switzerland Search other works by this author on: GSW Google Scholar Dominik Fleitmann; Fleitmann Albert Matter; Matter Ulrich Neff; Neff 2Heidelberg Academy Sciences, D-69120 Heidelberg, Germany Augusto Mangini Author and Article Information Publisher: Geological Society America Received: 04 Oct 2000...
Research Article| June 01, 1998 Speleothem-based paleoclimate record from northern Oman Stephen J. Burns; Burns 1Geologisches Institut, Universität Bern, CH-3012, Switzerland Search for other works by this author on: GSW Google Scholar Albert Matter; Matter Norbert Frank; Frank 2Heidelberger Akademie der Wissenschaften, D-69120 Heidelberg, Germany Augusto Mangini Geology (1998) 26 (6): 499–502. https://doi.org/10.1130/0091-7613(1998)026<0499:SBPRFN>2.3.CO;2 Article history first online: 02...
Meteorological records of monsoon rainfall in the Indian Ocean are generally less than 100 years long. The relative brevity these makes it difficult to investigate variation on decadal and centennial timescales, determine what factors influence intensity or place possible changes twentieth century into a broader historical context. Development geologic proxy for that annual over much longer time periods covered by instrumental would be significant step forward. We have developed an annually...
Quantifying the moisture history of Amazon Basin is essential for understanding cause rain forest diversity and its potential as a methane source. We reconstructed River outflow past 14,000 years to provide budget river drainage basin. The oxygen isotopic composition planktonic foraminifera recovered from marine sediment core in region discharge shows that was extremely dry during Younger Dryas, with reduced by at least 40% compared today. After meltwater-driven event followed steady...
Research Article| January 01, 2000 Isotopic evidence for late Quaternary climatic change in tropical South America Geoffrey Seltzer; Seltzer 1Department of Earth Sciences, Syracuse University, Syracuse, New York 13244, USA Search other works by this author on: GSW Google Scholar Donald Rodbell; Rodbell 2Department Geology, Union College, Schenectady, 12308, Stephen Burns 3Department University Bern, Switzerland Geology (2000) 28 (1): 35–38....
Research Article| January 01, 2007 Solar forcing of Holocene climate: New insights from a speleothem record, southwestern United States Yemane Asmerom; Asmerom 1Department Earth & Planetary Sciences, University Mexico, Albuquerque, Mexico 87131, USA Search for other works by this author on: GSW Google Scholar Victor Polyak; Polyak Stephen Burns; Burns 2Department Geosciences, Massachusetts, Amherst, Massachusetts 01003, Jessica Rassmussen 3Department Geology (2007) 35 (1): 1–4....
Abstract Analyses of sediment cores from Jellybean Lake, a small, evaporation-insensitive groundwater-fed lake, provide record changes in North Pacific atmospheric circulation for the last ∽7500 yr at 5- to 30-yr resolution. Isotope hydrology data southern Yukon indicate that oxygen isotope composition water Lake reflects mean-annual precipitation, δ 18 O p . Recent sedimentary calcite (δ ca ) correspond Index (NPI), measure intensity and position Aleutian Low (AL) pressure system. This...