Data

Datasets collected from monitored zebra anthrax carcass sites in Etosha National Park, Namibia, 2010-2021. One data file describes the anthrax mortality, soil characterization of the carcass sites and details on the types and timing of different sampling efforts at these sites. The other data file is counts of Bacillus anthracis spores in surface soils collected annually at these carcass...

This data release provides output produced by a statistical, aridity threshold fire model for 11 extensively forested ecoregions in the western United States. We identified thresholds in fire-season climate water deficit (FSCWD) that distinguish years with limited, moderate, and extensive area burned for each ecoregion. We developed a new area burned model using these relationships and...

This U.S. Geological Survey (USGS) data release provides benthic algae and stream channel characteristics data collected from 20 water-quality sites in the Upper White River Basin, Colorado., during 2018-2021. Also included are input and output data from streamflow and water-quality regression models used to characterize streamflow and water-quality conditions at 3 sites in the Upper...

Electron microprobe analyses of sphalerite (ZnS) were collected on samples from current or past mining operations in the USA with a specific focus on germanium (Ge), a byproduct critical mineral recovered from sphalerite. Data and methods reported are part of a research study published in the 'Related External Resources' section below.

Oxidation state and bonding environment of Ge and Cu in ZnS and Zn mineral concentrates from a variety of sources [Central Tennessee mining district (TN), Metaline mining district, (WA), and Red Dog mine (AK)] were determined by linear combination fits from x-ray absorption spectroscopy (XAS) analysis. Sphalerites from the East Tennessee mining district contained Ge in concentrations...

Germanium (Ge) is an element deemed critical globally, and used in electronics, communication, and defense applications. The supply of Ge is limited and as demand for it increases, its criticality increases. Germanium is exclusively recovered as a byproduct of either coal mining or zinc (Zn) mining, and the main mineral hosting Ge in Zn deposits is sphalerite (ZnS). However, the...

This data release contains new Earths gravity data from the Sopori Wash sub-basin in Pima and Santa Cruz Counties, Arizona. Data were acquired in January and March of 2017.

The surface of the moon is heterogeneous. The differences from area to area of characteristic topographic forms and of physical properties such as albedo (reflectivity under full-Moon illumination) indicate that the materials underlying the surface vary from one area to another and that different processes have operated in the development of the surface. In lunar geologic mapping, areas...

This map is one of a series prepared from photographs transmitted by Ranger IX (Jet Propulsion Lab, 1966, pls A56-58, B70-82). It depicts the geology of some 724 sq km in the northeast part of the floor of Alphonsus (Diameter about 115 km), a typical flat-floored old terra crater or basin with a subdued rim. Similar basins abound in the south central terrae of the visable hemisphere and...

This 1:50,000 scale geolgic map is one of a series constructed at various scales from photographs trasmitted by the Ranger VII, VIII and IX spacecraft. The center of the map area is about 23 km southwest of the Ranger VIII (US Air Force Aeronautical Chart and Information Center Chart AIC 60C, Arago). In general, geologic maps of the moon portray similarities and differences in the...

Material exposed on the surface of the moon is heterogenous. The albedo and other physical characteristics that have been determined with the use of optical and radio telescopes vary from one part of the moon from another, and the variations are partially correlated with differences in topography. Discontinuities in the areal variation permit the surface material to be divided up into...

The surface of the moon is heterogenous. Similar surface materials are grouped into map units by means of telescope observations, study of lunar photographs, and photometric measurements. Each map unit has lateral continuity and limited range of physiographic characteristics and optical properties (mainly albedo, the reflectivity under full moon illumination). Such units are equivalent...