lithology lab 4 quiz geol105L
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11 Terms
Lithology
Physical characteristics of a rock layer
Stratigraphy
Study of layers of rocks
Cores
Allow us to create a cross section of what's underground (if no outcrops)
Stratigraphic Correlation
Based on Law of Lateral Continuity: Matching of rock units / beds from separate outcrops or cores often miles apart
Lithology in Stratigraphic Correlation
Beds / formations are matched based on lithology: color, texture, composition
Sedimentary Facies
Different sediments are deposited in different depositional environments; eventually lithified to form a sedimentary rock
Sedimentary Facies Definition
Rock type indicates environment, environment indicates rock type
Lithofacies Map
Map of surface facies - rocks/environments
Facies Changes
Environments shift over time, ex. as sea level changes
Transgression
Sea level rise
Regression
Sea level fall