Show in a web browser window:

Show in Google Earth or other KML viewer:

ngdbrock.kml (uncompressed 37 Mbytes)

ngdbrock.kmz (compressed 1.5 Mbytes)

Show in your GIS using OGC web services:

https://mrdata.usgs.gov/services/ngdbrock (WMS, version 1.3.0)

https://mrdata.usgs.gov/services/wfs/ngdbrock (WFS, version 1.1.0)

Download data for geographic areas you choose

Search data using a form

Get the entire data set:

ngdbrock.zip (zipped shapefile with sample ID and link to online report 7.2M bytes)

ngdbrock-tab.zip (tab-delimited text, one file per table 36M bytes)

download (DBF files, zipped, downloadable separately 50M bytes total)

Metadata:

About the database tables and fields

All database fields, by category

Periodic table of elements showing relevant fields in the database

Frequently-asked questions

Aluminum, Antimony, Arsenic, Atomic absorption analysis, Atomic emission spectroscopy, Barium, Beryllium, Bismuth, Boron, Bromine, Cadmium, Calcium, Carbon, Cerium, Cesium, Chlorine, Chromium, Cobalt, Copper, Dysprosium, Erbium, Europium, Fluorine, Gadolinium, Gallium, Geochemistry, Geospatial datasets, Germanium, Gold, Hafnium, Holmium, Igneous rocks, Indium, Iodine, Iridium, Iron, Lanthanum, Lead, Lithium, Lutetium, Magnesium, Manganese, Mass spectroscopy, Mercury, Metamorphic rocks, Molybdenum, Neodymium, Neutron activation analysis, Nickel, Niobium, Osmium, Palladium, Phosphorus, Platinum, Potassium, Praseodymium, Radon, Rhenium, Rhodium, Rubidium, Ruthenium, Samarium, Scandium, Sedimentary rocks, Selenium, Silicon, Silver, Sodium, Strontium, Sulfur, Tantalum, Tellurium, Terbium, Thallium, Thorium, Thulium, Tin, Titanium, Tungsten, Uranium, Vanadium, X-ray diffraction, Ytterbium, Yttrium, Zinc, Zirconium
Columnar text, DBF, HTML table, KML, OGC WFS, OGC WMS, Shapefile