petrological in a sentence

Examples

1. Recently, the development of new analytical techniques for chemical analysis for igneous petrological applications during the latter half of the 20th century, e . g ., the electron microprobe, and the development of normal focus X-ray fluorescence for wellsite oil exploration has improved the availability of bulk chemical analysis techniques to the sedimentary geologist, making analysis of the chemical composition of strata increasingly possible.
2. The relational database structure of PetDB is a sample-based implementation and designed to accommodate chemical and petrological data for any type of rock sample, along with essential metadata that provide information about the sample ( e . g . location and time of collection, taxonomy, petrographic description ) and the data quality ( e . g . analytical procedure, reference standard measurements ) ( Lehnert et al . 2000 ).