petrography

[pi-trog-ruh-fee]

noun

1. the branch of petrology dealing with the description and classification of rocks, especially by microscopic examination.

petrography

/ ˌpɛtrəˈɡræfɪk, pɛˈtrɒɡrəfɪ /

noun

1. petrog. the branch of petrology concerned with the description and classification of rocks

petrography

1. The description and classification of rocks, especially by means of microscopic analysis.

Other Word Forms

• petrographer noun
• petrographic adjective
• petrographical adjective
• petrographically adverb

Word History and Origins

Origin of petrography¹

From the New Latin word petrographia, dating back to 1645–55. See petro- ¹, -graphy

Example Sentences

They will also do “petrography” on the concrete — studying it chemically and microscopically to test its strength and quality.

From Seattle Times

Petrography, diagenesis and provenance of Eocene Tyee Basin sandstones, southern Oregon Coast Range: new view from sequence stratigraphy.

From Nature

Endress, M., Spettel, B. & Bischoff, A. Chemistry, petrography and mineralogy of the Tonk CI chondrite: preliminary results.

From Nature

Geognosy, je-og′no-si, n. the study of the materials of the earth's substance, now frequently called Petrography—also Geognō′sis.—n.

From Project Gutenberg

Delicate cleavage-plates of gypsum are used in microscopic petrography for the determination of certain optical constants in the rock-forming minerals.

From Project Gutenberg