Field excursion from central Chile to the Atacama Desert

2018 ◽  
pp. 329-342
Author(s):  
Wes Gibbons
Keyword(s):  
Atacama Desert ◽  
Central Chile ◽  
Field Excursion

New record of the endemic jewel beetle Pygicera scripta krahmeri (Coleoptera, Buprestidae, Nacionini) from a coastal forest of Hualpén, Biobío Region, Chile

Zootaxa ◽  
2020 ◽  
Vol 4731 (2) ◽  
pp. 297-300
Author(s):  
RODRIGO M. BARAHONA-SEGOVIA ◽  
LAURA PAÑINAO-MONSÁLVEZ
Keyword(s):  
New Record ◽  
Atacama Desert ◽  
Coastal Forest ◽  
The South ◽  
Central Chile ◽  
Endemic Genus ◽  
The North ◽  
Valdivian Forest ◽  
The Common

Pygicera Kerremans, 1903 is an endemic genus of jewel beetle of Chile distributed in the central Chile hotspot, which is distributed from the Atacama Desert in the north to the Valdivian Forest in the south (Myers et al., 2000). Currently, Pygicera is composed of one species and two subspecies: Pygicera scripta scripta Laporte & Gory, 1837 and the Valdivian rainforest subspecies Pygicera scripta krahmeri Moore 1981 (Figs 2–6). The first subspecies is distributed from Limarí in the Coquimbo Region to Curicó in the Maule Region, both in the coast as well as Andean foothills. This is considered the common subspecies (Moore, 1981; Moore & Vidal, 2015). The southern subspecies is distributed from Victoria in the Araucanía Region to La Unión in Los Ríos Region (Moore, 1981; Moore & Vidal, 2015) and is the rarest and less abundant subspecies. The larvae of both subspecies have been recorded in the “maitén” (Maytenus boaria) Molina, from which they have been reared (Moore, 1981, 1987; Moore & Vidal, 2015). 

Paleontology and stratigraphy of Middle Eocene rock units in the southern Green River and Uinta Basins, Wyoming and Utah

2017 ◽  
Vol 4 ◽  
pp. 1-53 ◽  
Author(s):  
Paul Murphey ◽  
K.E. Townsend ◽  
Anthony Friscia ◽  
James Westgate ◽  
Emmett Evanoff ◽  
...  
Keyword(s):  
Current Knowledge ◽  
Middle Eocene ◽  
Green River Basin ◽  
Green River ◽  
Scientific Exploration ◽  
History Of ◽  
Climatic History ◽  
Field Excursion ◽  
Land Mammal ◽  
Bridger Formation

The Bridger Formation is restricted to the Green River Basin in southwest Wyoming, and the Uinta and Duchesne River Formations are located in the Uinta Basin in Utah. These three rock units and their diverse fossil assemblages are of great scientific importance and historic interest to vertebrate paleontologists. Notably, they are also the stratotypes from oldest to youngest for the three middle Eocene North American Land Mammal Ages—the Bridgerian, Uintan, and Duchesnean. The fossils and sediments of these formations provide a critically important record of biotic, environmental, and climatic history spanning approximately 10 million years (49 to 39 Ma). This article provides a detailed field excursion through portions of the Green River and Uinta Basins that focuses on locations of geologic, paleontologic, and historical interest. In support of the field excursion, we also provide a review of current knowledge of these formations with emphasis on lithostratigraphy, biochronology, depositional, and paleoenvironmental history, and the history of scientific exploration.

Danube Field Excursion 1988: Tritium Content of River Water; Radioactivity of Danube Sediments

1990 ◽  
Vol 22 (5) ◽  
pp. 203-210 ◽  
Author(s):  
D. Rank ◽  
F. J. Maringer ◽  
W. Papesch ◽  
V. Rajner
Keyword(s):  
River Water ◽  
Bottom Sediments ◽  
Nuclear Power ◽  
Radioactive Material ◽  
Reactor Accident ◽  
Tritium Content ◽  
Fine Sediments ◽  
Fish Samples ◽  
Field Excursion

Water, sediment, and fish samples were collected during the Danube excursion 1988, within a coordinated sampling program of the Radiology Working Group of the “Internationale Arbeitsgemeinschaft Donauforschung ” (K.Hübel, Munich; I. Kurcz, Budapest; D.Rank, Vienna). The H-3 content of the river water and the radioactivity of the bottom sediments were measured at the BVFA Arsenal, Vienna. The determined H-3 content of the Danube water corresponds with the long-term trend in the H-3 content of the hydrosphere; the values lie in the range of 3 Bq/kg downstream from Belgrade, upstream from Belgrade they are about 4 Bq/kg. It was only in the waste water plume of the nuclear power station of Kozloduj that a slightly elevated H-3 value - 6 Bq/kg - was determined. The content of the sediments of artificial radionuclides was found, at the time of the Danube field excursion, to be almost exclusively due to the radioactive material released following the reactor accident at Chernobyl in April 1986 (mainly Cs-137 and Cs-134). As a consequence of the air currents and precipitation conditions prevailing at the time of the accident, the bottom sediments in the lower course of the Danube were less contaminated than those in the upper course. The fine sediments were found to contain over 3000 Bq/kg of Cs-137 in the upper course of the Danube.

MUDFLOW ALLUVIAL FANS OF THE ATACAMA DESERT IN CHILE

2016 ◽  
Author(s):  
Alan D. Howard ◽  
◽  
William E. Dietrich ◽  
Rebecca M.E. Williams ◽  
Alex M. Morgan ◽  
...  
Keyword(s):  
Atacama Desert ◽  
Alluvial Fans

CONFOUNDINGLY COMPLEX EXPOSURE HISTORIES REVEALED BY 21NE AND 10BE ABUNDANCES IN ALLUVIAL DEPOSITS OF THE ATACAMA DESERT, NORTHERN CHILE

2017 ◽  
Author(s):  
Matthew Cross Jungers ◽  
◽  
Arjun M. Heimsath ◽  
Ronald Amundson ◽  
Greg Balco ◽  
...  
Keyword(s):  
Atacama Desert ◽  
Northern Chile ◽  
Alluvial Deposits
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