Definition of petrography in English:

petrography

noun pɛˈtrɒɡrəfipəˈtrɑɡrəfi

mass noun

The branch of science concerned with the composition and properties of rocks.
岩相学，岩类学
Example sentencesExamples
- The field-based studies were supplemented by thin-section petrography and whole-rock geochemistry to characterize different intrusive phases.
- The lavas have been divided into two main series (informally called the lower volcanics and the plateau basalts) based on their stratigraphy, geochemistry and petrography.
- A variety of sedimentological criteria, including petrography, texture, lithology and sedimentary structures, must be applied in the environmental analysis of Precambrian arenites.
- The SEPM constitution made it clear that the ‘object of the Society is to promote the science of stratigraphy through research in paleontology and sedimentary petrography, especially as it relates to petroleum geology’.
- All aspects of oceanic island rocks, including petrography, volcanology, and geochemistry, are inter-related. Thus, no one scale of observation is entirely satisfactory to understanding their origin.

Derivatives

petrographer

noun pɪˈtrɒɡrəfəpəˈtrɑɡrəfər

A petrographer could examine a sample of the stained concrete and tell you whether the aggregate is likely to be the source of staining.
Example sentencesExamples
- If the petrographer can document that such changes occurred during the laboratory examination, that may provide useful information on the concrete's condition.
- Bill is a concrete chemist; Bernie is a concrete petrographer - each is a materials and concrete technologist.
- But there are some questions that even the best petrographer cannot answer, such as whether a chemical admixture was used in the mix and, if so, how much, what type of Portland cement was used, or what the water/cement ratio was.
- If you want to unravel the mystery of why your nonstructural concrete cracked, your best option is to consult your competent, friendly petrographer.

petrographic

adjective pɛtrəˈɡrafɪkˌpɛtrəˈɡræfɪk

Interpretation of these spherules as impact-related has been challenged, but is supported by petrographic contrasts with volcanic ejecta, iridium and related siderophile anomalies, Ni-rich spinels and chromium isotopes.
Example sentencesExamples
- Various combinations of these processes are invoked to account for the range of geochemical and petrographic features in tale-alkaline continental margin volcanic arc suites.
- Sediments and lavas were correlated in the field and by subsequent petrographic analysis of volcanic components and textures of deposits.
- To assign the interbedded sedimentary strata to the correct system it is, however, necessary to incorporate biostratigraphic and petrographic data.
- Destructive geochemical methods are commonly combined with petrographic methods (thin sections, stained sections, cathodoluminescence) to interpret the history of rock cementation.

petrographical

adjective pɛtrəˈɡrafɪk(ə)l

During the mid-1980s to early 1990s more research took place that involved detailed petrographical and geochemical studies on the syenites, alkaline, and peralkaline rocks.
Example sentencesExamples
- Geochemical and petrographical studies provide supporting evidence for multiple fluid flow events along the Moine Thrust Zone.
- The petrographical and geochemical data provide little evidence for the existence of a contemporaneous volcanic arc and the igneous material is interpreted instead to have been derived from a palaeovolcanic source.
- The sandstone dykes and surrounding sediments were subject to petrographical analyses in order to gain a better understanding of their relationships.
- The provenance of turbidites from the predominantly Arenig-aged Manx Group has been constrained using petrographical and geochemical techniques.

Definition of petrography in US English:

petrography

nounpəˈträɡrəfēpəˈtrɑɡrəfi

The branch of science concerned with the description and classification of rocks, especially by microscopic study.
岩相学，岩类学
Compare with petrology
Example sentencesExamples
- All aspects of oceanic island rocks, including petrography, volcanology, and geochemistry, are inter-related. Thus, no one scale of observation is entirely satisfactory to understanding their origin.
- A variety of sedimentological criteria, including petrography, texture, lithology and sedimentary structures, must be applied in the environmental analysis of Precambrian arenites.
- The SEPM constitution made it clear that the ‘object of the Society is to promote the science of stratigraphy through research in paleontology and sedimentary petrography, especially as it relates to petroleum geology’.
- The field-based studies were supplemented by thin-section petrography and whole-rock geochemistry to characterize different intrusive phases.
- The lavas have been divided into two main series (informally called the lower volcanics and the plateau basalts) based on their stratigraphy, geochemistry and petrography.

单词	petrography
释义	Definition of petrography in English: petrography noun pɛˈtrɒɡrəfipəˈtrɑɡrəfi mass noun The branch of science concerned with the composition and properties of rocks. 岩相学，岩类学 Example sentencesExamples The field-based studies were supplemented by thin-section petrography and whole-rock geochemistry to characterize different intrusive phases. The lavas have been divided into two main series (informally called the lower volcanics and the plateau basalts) based on their stratigraphy, geochemistry and petrography. A variety of sedimentological criteria, including petrography, texture, lithology and sedimentary structures, must be applied in the environmental analysis of Precambrian arenites. The SEPM constitution made it clear that the ‘object of the Society is to promote the science of stratigraphy through research in paleontology and sedimentary petrography, especially as it relates to petroleum geology’. All aspects of oceanic island rocks, including petrography, volcanology, and geochemistry, are inter-related. Thus, no one scale of observation is entirely satisfactory to understanding their origin. Derivatives petrographer noun pɪˈtrɒɡrəfəpəˈtrɑɡrəfər A petrographer could examine a sample of the stained concrete and tell you whether the aggregate is likely to be the source of staining. Example sentencesExamples If the petrographer can document that such changes occurred during the laboratory examination, that may provide useful information on the concrete's condition. Bill is a concrete chemist; Bernie is a concrete petrographer - each is a materials and concrete technologist. But there are some questions that even the best petrographer cannot answer, such as whether a chemical admixture was used in the mix and, if so, how much, what type of Portland cement was used, or what the water/cement ratio was. If you want to unravel the mystery of why your nonstructural concrete cracked, your best option is to consult your competent, friendly petrographer. petrographic adjective pɛtrəˈɡrafɪkˌpɛtrəˈɡræfɪk Interpretation of these spherules as impact-related has been challenged, but is supported by petrographic contrasts with volcanic ejecta, iridium and related siderophile anomalies, Ni-rich spinels and chromium isotopes. Example sentencesExamples Various combinations of these processes are invoked to account for the range of geochemical and petrographic features in tale-alkaline continental margin volcanic arc suites. Sediments and lavas were correlated in the field and by subsequent petrographic analysis of volcanic components and textures of deposits. To assign the interbedded sedimentary strata to the correct system it is, however, necessary to incorporate biostratigraphic and petrographic data. Destructive geochemical methods are commonly combined with petrographic methods (thin sections, stained sections, cathodoluminescence) to interpret the history of rock cementation. petrographical adjective pɛtrəˈɡrafɪk(ə)l During the mid-1980s to early 1990s more research took place that involved detailed petrographical and geochemical studies on the syenites, alkaline, and peralkaline rocks. Example sentencesExamples Geochemical and petrographical studies provide supporting evidence for multiple fluid flow events along the Moine Thrust Zone. The petrographical and geochemical data provide little evidence for the existence of a contemporaneous volcanic arc and the igneous material is interpreted instead to have been derived from a palaeovolcanic source. The sandstone dykes and surrounding sediments were subject to petrographical analyses in order to gain a better understanding of their relationships. The provenance of turbidites from the predominantly Arenig-aged Manx Group has been constrained using petrographical and geochemical techniques. Definition of petrography in US English: petrography nounpəˈträɡrəfēpəˈtrɑɡrəfi The branch of science concerned with the description and classification of rocks, especially by microscopic study. 岩相学，岩类学 Compare with petrology Example sentencesExamples All aspects of oceanic island rocks, including petrography, volcanology, and geochemistry, are inter-related. Thus, no one scale of observation is entirely satisfactory to understanding their origin. A variety of sedimentological criteria, including petrography, texture, lithology and sedimentary structures, must be applied in the environmental analysis of Precambrian arenites. The SEPM constitution made it clear that the ‘object of the Society is to promote the science of stratigraphy through research in paleontology and sedimentary petrography, especially as it relates to petroleum geology’. The field-based studies were supplemented by thin-section petrography and whole-rock geochemistry to characterize different intrusive phases. The lavas have been divided into two main series (informally called the lower volcanics and the plateau basalts) based on their stratigraphy, geochemistry and petrography.
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