Search filters

List of works by Floyd Gray

A high-resolution land-use map; Nogales, Sonora, Mexico

article by Laura M. Norman et al published 2010 in Open-File Report

Abstracts of the symposium of the Geology and mineral deposits of the Ajo and Lukeville 1 degree x 2 degrees Quadrangle, Arizona

scholarly article by Floyd Gray published in January 1988

Assessment of geochemical and hydrologic conditions near Old Yuma Mine in Saguaro National Park, Arizona, 2014–17

scholarly article in Scientific Investigations Report, 2018

Developing an Ecosystem Services Online Decision Support Tool to Assess the Impacts of Climate Change and Urban Growth in the Santa Cruz Watershed; Where We Live, Work, and Play

scholarly article by Laura M. Norman et al published 9 July 2010 in Sustainability

Geologic framework and hydrogeology of the Rio Rico and Nogales 7.5’ quadrangles, upper Santa Cruz Basin, Arizona, with three-dimensional hydrogeologic model

scholarly article in Scientific Investigations Report, 2018

Geologic map of the Ajo and Lukeville 1 degrees by 2 degrees quadrangle, Southwest Arizona

article by Floyd Gray et al published 1988 in Open-File Report

Geologic map of the Lower Coon Mountain Pluton, Del Norte County, California

scientific article published in 1985

Geologic map of the Rio Rico and Nogales 7.5’ quadrangles, Santa Cruz County, Arizona

scholarly article published 2016

Geology and mineral resource assessment of the Venezuelan Guayana Shield at 1:500,000 scale; a digital representation of maps published by the U.S. Geological Survey

Hydrogeologic investigations of the Miocene Nogales Formation in the Nogales Area, Upper Santa Cruz Basin, Arizona

scholarly article in Scientific Investigations Report, 2016

Mineral resource assessment of the Ajo and Lukeville 1 degree x 2 degrees quadrangles, Arizona

scientific article published in 1985

Nickel-cobalt laterites: a deposit model

article

Nogales flood detention study

scientific article published in 2010

Porphyry Copper Assessment of Mexico

scholarly article in Scientific Investigations Report, 2010

Porphyry copper assessment of Central America and the Caribbean Basin

scholarly article in Scientific Investigations Report, 2014

Porphyry copper deposit model

article

Preliminary United States-Mexico border watershed analysis, twin cities area of Nogales, Arizona and Nogales, Sonora

scholarly article by Laura Margaret Brady et al published 2002 in Open-File Report

Preliminary geologic map of the Greater Antilles and the Virgin Islands

article by Frederic H. Wilson et al published 2019 in Open-File Report

Preliminary geologic map of the Medford 1 degree by two degrees quadrangle, Oregon and California

article by James G. Smith et al published 1982 in Open-File Report

Preliminary reconnaissance geologic map of the Glendale Quadrangle, Oregon

article by Norman J Page et al published 1978 in Open-File Report

Reconnaissance geologic map and aeromagnetic map of the Hat Mountain Quadrangle, Maricopa County, Arizona

article by Floyd Gray et al published 1985 in Open-File Report

Reconnaissance geologic map of parts of the Gold Hill, Ruch, Medford, and Talent 15-minute quadrangles, southwestern Oregon

article published in 1981

Socio-Environmental Health Analysis in Nogales, Sonora, Mexico

scientific article

Stratigraphy and Mesozoic–Cenozoic tectonic history of northern Sierra Los Ajos and adjacent areas, Sonora, Mexico

article

Stratigraphy and paleontology of Lower Permian rocks north of Cananea, northern Sonora, Mexico

scholarly article

The Border Environmental Health Initiative-investigating the transboundary Santa Cruz watershed

The Borderlands and climate change: Chapter 10 in United States-Mexican Borderlands: Facing tomorrow's challenges through USGS science

The Conterminous United States Mineral Assessment Program; background information to accompany folio of geologic, geochemical, geophysical, and mineral resource maps of the Ajo and Lukeville 1 degree x 2 degrees quadrangles, Arizona

Tracing ground water input to base flow using sulfate (S, O) isotopes

scientific article published on 6 March 2008

Tracking acid mine-drainage in Southeast Arizona using GIS and sediment delivery models

scientific article published on 11 December 2007

Transient electromagnetic study of basin fill sediments in the Upper San Pedro Basin, Mexico

Understanding Metal Pathways in Mineralized Ecosystems