AGH Sed1 Intro HANDOUT


Sedimentary Geology
The term sedimentology was defined by Wadell (1932) as
"the study of sediments." (Selley  opening sentence)
" Sedimentology = the study of the processes of formation,
transport and deposition of material which accumulates as
SEDIMENTOLOGY
sediment in continental and marine environments and
eventually forms sedimentary rocks
1 Introduction
" Sedimentary petrology = mineral composition of sed. rocks
and its changes after deposition (diagenasis)
" Stratigraphy = the study of rocks to determine the order and
timing of events in Earth history
" Sedimentary geology H" sedimentology + sedimentary
petrology + stratigraphy
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"Pure' & "applied" sedimentology
Applied Sedimentology Applied Sedimentology
Mineral deposits & sed environments Sedimentary ores
Rock cycle ver. 1
Introduction
Sedimentary geology within the Earth sciences
" Rock cycle: mountain formation and/or uplift; weathering and
erosion; sediment transport, deposition, and diagenesis;
metamorphism and igneous rock formation; renewed uplift&
etc.
" Structural geology/Tectonics (Geophysics); Geomorphology;
Sedimentology/Stratigraphy (Sedimentary geology);
Metamorphic geology/Petrology
" Other closely related disciplines: Paleontology, Geochemistry,
Geochronology
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Sediments & sedimentary rocks: classification
UNIFORMITARIANISM
"The geological processes that operate today also
operated in the past and produced the same results"
In brief:
 Present is the key to the past
Therefore, in Sedimentology ee reconstruct ancient
environments by comparing recent geological
processes and their products (which we can observe)
with products of ancient geological processes.
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