Latest Breaking News On - Stable isotopes - Page 5 : comparemela.com

UNM Biologists Contribute to Major Whale Study

"The mobilization of boron and lithium in the hydrothermal system of th" by Stefano Caruso, Raphael J. Baumgartner et al.

Voluminous hydrothermal circulation in the ∼3.48 Ga Dresser caldera produced zoned alteration haloes around major fluid pathways. Specifically, in the North Star Basalt (the footwall) hydrothermal alteration decreases with increasing distance from the margins of hydrothermal silica±barite veins, changing from argillic (i.e., kaolinite-quartz) to phyllic (i.e., illite-quartz), and then to either propylitic (i.e., chlorite-albite-epidote) or actinolitic (i.e., actinolite-albite-chlorite-epidote) assemblages at distal positions. This alteration series developed through hydrolysis reactions at decreasing acidic conditions, which promoted variable degrees of mobilization of major and trace elements in the hydrothermal fluids. In this study, we characterize the B and Li concentrations and the relative stable isotope ratios of the altered North Star Basalt to provide new insights into the hydrothermal processes that generated these complex alteration patterns. In particular, we focus on th

Romanian Ambassador visits the UNM Center for Stable Isotopes as part of '50 States, One Community' Tour

Recently, the Center for Stable Isotopes (CSI) at The University of New Mexico welcomed a very special visitor to its lab in the Physics & Astronomy and Interdisciplinary Science (PAÍS) building. Andrei Muraru, the Romanian Ambassador to the United.

Romanian Ambassador visits the UNM Center for Stable Isotopes as part of '50 States, One Community' Tour

"Emerging biological archives can reveal ecological and climatic change" by Jan M. Strugnell, Helen V. McGregor et al.

Anthropogenic climate change is causing observable changes in Antarctica and the Southern Ocean including increased air and ocean temperatures, glacial melt leading to sea-level rise and a reduction in salinity, and changes to freshwater water availability on land. These changes impact local Antarctic ecosystems and the Earth's climate system. The Antarctic has experienced significant past environmental change, including cycles of glaciation over the Quaternary Period (the past ~2.6 million years). Understanding Antarctica's paleoecosystems, and the corresponding paleoenvironments and climates that have shaped them, provides insight into present day ecosystem change, and importantly, helps constrain model projections of future change. Biological archives such as extant moss beds and peat profiles, biological proxies in lake and marine sediments, vertebrate animal colonies, and extant terrestrial and benthic marine invertebrates, complement other Antarctic paleoclimate archive