Igneous petrology most common application of stratigraphic dating on volcanic rocks. In petrology the mineral clinopyroxene is used for temperature and pressure calculations of the magma that produced igneous rock containing this mineral. Clinopyroxene thermobarometry is one of several geothermobarometers. Two things make this method especially useful: first, clinopyroxene is a common phenocryst in igneous rocks easy to identify; and secondly, the crystallization of the jadeite component of clinopyroxene implies a growth in molar volume being thus a good indicator of pressure. Most contemporary ground breaking in igneous petrology has been published in prestigious American and British scientific journals of worldwide circulation
Fossil and Petrology collections, New South Wales Fossil and Petrology collections, New South Wales The Fossil and Petrology collections are two heritage-listed fossil and petrology collections located at 947-953 Londonderry Road, Londonderry, City of Penrith, New South Wales, Australia. The collections are owned by the NSW Department of Primary Industries, a department of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 2 April 1999. The fossil collection is assessed as State Significance. Fossils by their nature are unique and irreplaceable; unlike extant organisms, they can not be replaced. The fossil collections of the Geological Survey of NSW