Labs | Sedimentary Geology | Earth, Atmospheric, and Planetary Sciences | MIT OpenCourseWare

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Course Info

Instructor

Prof. David Mohrig

Departments

Earth, Atmospheric, and Planetary Sciences

As Taught In

Fall 2004

Level

Undergraduate

Topics

Science
- Earth Science

Learning Resource Types

Image Gallery

Lecture Notes

Activity Assignments with Examples

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Labs

The image galleries display dozens of photos of rock samples. As of the date of publication, only the first lab file was available.

lab #	TOPICS	photos of rock samples
1	Sediment Transport, Bedforms and Production of Stratification (PDF)
2	Sediment Types, Mechanical and Chemical Weathering, Lithification	Image Gallery
3	Siliciclastic Rocks	Image Gallery
4	Trace Fossils, Sole Marks and Soft-Sediment Deformation
5	Organic Deposits and Evaporites
6	Invertebrate Fossils
7	Microfossils and Paleoceanography
8	Carbonate Rocks	Image Gallery
9	Basin Stratigraphy

All images in this gallery are courtesy of OCW.

Chemically Weathered Surface of Basalt. Fossiliferous limestone bound together by fine grained carbonate cement where cement is weathering faster than fossils. Chemically weathered marble where weathering is preferentially occuring in cement. Well rounded and smooth cobbles from Massachusetts beach. Three Samples with Differential Weathering occuring along fine grained component of rock. Sample with Differential Weathering occuring along fine grained component of rock. Iron concretions that formed around plant roots in reducing conditions. Quartizite polished by impacting fine wind blown sand. Chemically weathered obsidian glass with end result of weathering being whitish mineral perlite. Loesskinder Pleistocene Loess. Obsidian tuff with outer weathered rind. Modern Coquina limestone. Diabase with heavy chemical weathering producing outer rind. Concretion nodules formed in shales and initiated from a point source. Concretion nodules formed in shales and initiated from a point source. Immature with regard to physical and chemical weathering Beach sand with heavy Biological component, very angular and poorly sorted. Semi-angular river pebbles. Angular weathering immature pebbles Sediment Dredgings from 75m depth including heavy biological component. Well Sorted Mature quartz beach sand. Chemically Weathered Granite Sand, Very Mature. Well Sorted and very rounded ooid sand. Medium Sorted sand from North Loop River Nebraska. Poorly Sorted Sand and Pebbles that are very angular from North Loop River, Nebraska. Chemically Immature Olivine Beach Medium Angular Sand. Chemically Immature Bauxite. Protolith Rock and Weathered residual angular sand. Poorly Sorted Pebbles from North Loop River, Nebraska. Peles Hair Sediment - Rapidly cooled volcanic glass blown out of Hawain volcano. Loess Sediment from Eastern Washington. Loess Sediment from Eastern Washington. Heavily Chemically weathered basalt sediment, poorly sorted sand. Water transported poorly sorted medium sand from North Loop River, Nebraska. Basalt Sediement Blown from cinder cone volcano, chemically and physically immature. Very smooth, rounded Pebbles from Lakeshore. Wind Blown Volcanic ash. Immature with regard to physical and chemical weathering Beach sand with heavy Biological component, very angular and poorly sorted. Well Sorted Quatz Beach Sand. Very well sorted sand from eolian beach dunes.

All images in this gallery are courtesy of OCW.

Sandstone with oscillatory ripples produced in a wave dominated system. Quartz Arenite. Quartz Arenite. Framework Conglomerate. Framework Conglomerate. Matrix-supported conglomerate. Matrix-supported conglomerate. Sandstone with preserved tool marks. Paleo flow was parallel with tool marks, but exact direction of flow can not be known from tool marks. Sandstone with preserved flute marks. Sand/mudstone with preserved convoluted bedding indicating rapid loading of beds. Framework Breccia. Framework Breccia. Framework Breccia. Framework Breccia. Framework Breccia. Framework Breccia. Mudstone. Soft-rock deformation with preserved dewatering pipes from compaction of gray silt. Fining upwards sequence in recent tuff indicating decreasing transport conditions through time. Feldsparic Arenite. Lithic Wacke. Lithic Wacke. Preserved Trace Fossils on top of ripple crest. Matrix-supported Conglomerate. Matrix-supported Conglomerate. Sandstone. Sandstone. Framework conglomerate. Framework conglomerate. Framework conglomerate. Sandstone bored through by bivalves. Sandstone bored through by bivalves. Eolian Sandstone with very good sorting of coarse material and fine material in separated layers. Eolian Sandstone with very good sorting of coarse material and fine material in separated layers. Sandstone with unidirectional ripples preserved that are ~ 5 cm high. Claystone. Feldsparic Arenite. Feldsparic Arenite. Claystone. Rippled Sandstone with vertical borings through sample. Rippled Sandstone with vertical borings through sample. Matrix-supported conglomerate. Preserved casts of mudcracks. Framework Conglomerate. Mudstone. Preserved raindrop indentations in sandstone. Preserved raindrop indentations in sandstone. Bimodal transport directions preserved in ripples in sandstone. Bimodal transport directions preserved in ripples in sandstone. Preserved Hummocky cross-stratification. Preserved Hummocky cross-stratification.

Course Info

Instructor

Prof. David Mohrig

Departments

Earth, Atmospheric, and Planetary Sciences

As Taught In

Fall 2004

Level

Undergraduate

Topics

Science
- Earth Science

Learning Resource Types

Image Gallery

Lecture Notes

Activity Assignments with Examples

Download Course

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