March 14, 2019 admin 1

Gravel /ˈɡrævəl/ is a loose aggregation of rock fragments. Gravel is classified by particle size range and includes size classes from granule- to boulder-sized fragments. […]

What are Ripple Marks?

February 8, 2019 admin 1

What is a ripple mark? How ripple marks are formed? What causes ripple marks in sedimentary rocks? What is a ripple mark size? Ripple marks […]

Sedimentary rocks-Classification

January 28, 2019 admin 2

Lithification Sedimentary rocks are formed through lithification: Shown in (A) are unconsolidated particles.  When subjected to lithification, they become sedimentary rock shown in (B). Sedimentary […]



January 7, 2019 admin 1

Karst refers the topography typically developed on limestone, gypsum and other soluble rocks, primarily by dissolution. Karst regions are typified by sinkholes, cave, dry channels […]

Primary Sedimentary Structures

December 13, 2018 admin 0

Structures acquired during deposition of sedimentary rock unit.Stratification – horizontal bedding is most common structure in sedimentary rocks. Cross-bedding – inclined stratification recording migration of […]

How Does Shale Form?

December 10, 2018 admin 0

Figure 1 – Shale—the most abundant sedimentary rock Dark shale containing fossilized plant remains is relatively common. (Photo by E. J. Tarbuck) Shale is a […]


December 2, 2018 admin 0

Limestone commonly weathers to a bluish-grey color. Carbonic acid from rainwater and water percolating through decaying forest liter weathers feldspar and calcite. Carbonate rocks are more […]

Sedimentary rocks

November 4, 2018 admin 4

Sedimentary rock is a type of rock that is formed by sedimentation of material at the Earth’s surface and within bodies of water. Sedimentation is […]