scholarly journals Geochemical baselines for surface waters and stream sediments and processes controlling element mobility, Rough and Ready Creek and Oregon Caves National Monument and vicinity, southwestern Oregon

1998 ◽  
Author(s):  
W.R. Miller ◽  
D.B. Smith ◽  
A.L. Meier ◽  
Paul H. Briggs ◽  
P.M. Theodorakos ◽  
...  
2004 ◽  
Vol 38 (16) ◽  
pp. 4285-4292 ◽  
Author(s):  
John E. Gray ◽  
Mark E. Hines ◽  
Pablo L. Higueras ◽  
Isaac Adatto ◽  
Brenda K. Lasorsa

1957 ◽  
Vol 47 (3) ◽  
pp. 98
Author(s):  
William H. Baker ◽  
George C. Ruhle

Zootaxa ◽  
2019 ◽  
Vol 4674 (5) ◽  
pp. 571-580
Author(s):  
WILLIAM A. SHEAR ◽  
RODNEY L. CRAWFORD

Two new species of millipedes are described from Oregon Caves National Monument, Josephine County, Oregon, USA: Taiyutyla caseophila, n. sp. (Conotylidae), a troglophile; and Opiona catorycha, n. sp. (Caseyidae), a troglobiont found in at least one other cave in the region. We also provide a brief discussion of the invertebrate biodiversity of Oregon Cave. 


2020 ◽  
Author(s):  
Halofsky Jessica ◽  
David Peterson ◽  
Harriet Morgan ◽  
Meade Krosby ◽  
John Roth

2015 ◽  
Vol 68 (1) ◽  
pp. 43-51 ◽  
Author(s):  
Raphael de Vicq Ferreira da Costa ◽  
Mariangela Garcia Praça Leite ◽  
Fellipe Pinheiro Chagas Mendonça ◽  
Hermínio Arias Nalini Jr.

A regional study on the arsenic concentration in surface waters and stream sediments, with a density of one sample every 13 km2, was carried out for the first time in the Quadrilátero Ferrífero (Brazil). The region was divided into 3rd order catchment basins, in which 512 areas were sampled. The arsenic concentration was determined in waters and stream sediments after partial digestion with the aid of ICP-OES. The arsenic values found in surface waters ranged from 57.70 to 414 µg.L-1, while for stream sediments, arsenic concentrations ranged from 0.63 to 1691 mg.kg-1, and from the 512 sampling points, 135 (26%) had arsenic concentrations above the limit of detection, which was 0.63 mg.kg-1. It was also found that 106 3rd order catchment basins had values above the third quartile, (5.09 mg.kg-1). The results show that high concentrations of this element are strongly related to the presence of Nova Lima rocks that contain minerals rich in arsenic. However, the anthropogenic influence in such high concentrations cannot be ruled out, as the region has a history of over 300 years of gold mining.


2018 ◽  
Vol 557 ◽  
pp. 30-40
Author(s):  
Ahmed I. Rushdi ◽  
Vasile Ersek ◽  
Alan C. Mix ◽  
Peter U. Clark

Author(s):  
Gilpin R. Robinson ◽  
Katherine E. Kapo ◽  
Jeffrey N. Grossman

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