Výsledky vyhledávání - "Leslie A. Melim"

Silicification of trilobites and biofilm from the Cambrian Weeks Formation, Utah: Evidence for microbial mediation of silicification

Autor: Leslie A. Melim, Sebastien R. Mure-Ravaud, Thomas A. Hegna, Brian J. Bellott, Rudy Lerosey-Aubril

Publikováno v: Geology. 51:80-84

We report on silicified trilobite sclerites with associated silicified biofilm from the Cambrian Weeks Formation, Utah (USA), that support a role for microbial biofilms in silicification. Silicified sclerites are typically small (500 µm) of silica-c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a716a6d1ccf452ed0a781c9a47a8af57
https://doi.org/10.1130/g50496.1

Zobrazit plný text záznamu

PRESERVATION OF FOSSIL MICROBES AND BIOFILM IN CAVE POOL CARBONATES AND COMPARISON TO OTHER MICROBIAL CARBONATE ENVIRONMENTS

Autor: Diana E. Northup, Penelope J. Boston, Leslie A. Melim, Michael N. Spilde

Publikováno v: PALAIOS. 31:177-189

Fossil microbes are generally preserved by authigenic minerals, including silica, apatite, iron minerals, clays, and carbonates. An alternative mode of preservation by entombment in calcite, without replacement, has been identified in carbonate cave

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2d907b4ab958311e8ff0d71e58c0f00b
https://doi.org/10.2110/palo.2015.033

Zobrazit plný text záznamu

Infrared Spectroscopic Biosignatures from Hidden Cave, New Mexico: Possible Applications for Remote Life Detection

Autor: Yemane Asmerom, Leslie A. Melim, Victor J. Polyak, L. J. Preston, Gordon Southam

Publikováno v: Geomicrobiology Journal. 31:929-941

Subsurface environments are known to support and preserve diverse microbial communities. Giant pool fingers from Hidden Cave, New Mexico consist of mm-scale dark micritic calcite layers alternating with clear dogtooth spar crystals and contain morpho

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f25d6b2ea0bd5c258c0b073413ef1c78
https://doi.org/10.1080/01490451.2014.913096

Zobrazit plný text záznamu

Plný text ve formátu HTML

Anthropogenic lead as a tracer of rock varnish growth: Implications for rates of formation

Autor: Michael N. Spilde, Diana E. Northup, Leslie A. Melim, Penelope J. Boston

Publikováno v: Geology. 41:263-266

Rock varnish is a thin dark coating best known from deserts, and is believed to grow extremely slowly. Varnish samples from near Socorro, New Mexico (United States), contain as much as 3.7% PbO, derived from nearby smelters operating from A.D. 1870 t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5230cda26777ac27ca2f31f2ab24474a
https://doi.org/10.1130/g33514.1

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání