April 16, 2015 Questions EQ: How and where does sedimentary rock form? Subject Area: Ch: 4 Sec: 3 Sedimentary Rock EQ: How and where does sedimentary rock form? Questions How does the two types of sedimentary rock form? Agenda Roll Chapter 4 Section 3 “Sedimentary Rock” Video: “The Hard Facts” Come in Quietly and sit at your desk, open to your notes, write the new question, and wait quietly for class to begin.

Sedimentary Rock Through the process of erosion, rock fragments, called sediment, are transported from one place to another.

Sedimentary Rock This sediment deposits in layers and when cemented together will form sedimentary rock.

Origins of Sedimentary Rock As new layers of sediment are deposited, the layers eventually become compressed, or compacted.

Sedimentary Rock Cycle Sedimentary rock forms at or near the Earth’s surface, without the heat and pressure involved in the formation of igneous and metamorphic rock. How does sedimentary rock form? Response: Sedimentary rock forms by …

Strata The physical features of sedimentary rock tell part of it’s history. The most noticeable feature of sedimentary rock is it’s layers, or strata.

Grand Canyon Millions of years of erosion by the Colorado River have revealed the rock strata in the walls of the Grand Canyon.

Composition of Sedimentary Rock Sedimentary rock is also classified by the way it forms. There are two main categories of sedimentary rock, clastic and chemical.

Clastic Sedimentary Rock Clastic rock forms when rock or mineral fragments, called clasts, stick together. Clastic rock is made up of other rocks and minerals. What is Clastic Sedimentary rock? Response: Clastic sedimentary rock is …

Canyons What did you know? _____________________________________________ 2. What did you learn? 3. What do you want to know?

Chemical Sedimentary Rock Chemical rock forms when minerals crystallize out of a solution, such as sea water, to become rock.

Chemical Sedimentary Rock Chemical sedimentary rock forms from solutions of minerals and water.

Chemical Sedimentary Rock Rainwater will dissolve some of the rock that it passes through.

Chemical Sedimentary Rock Some of this dissolved material eventually forms the minerals that make up chemical sedimentary rock.

Chemical Sedimentary Rock Chemical limestone forms on the ocean floor. Most limestone forms from the remains of organisms that lived at the bottom of shallow seas. This is usually shells and clams and the skeletons of tiny organisms called coral.

Chemical Sedimentary Rock Another type of organic limestone forms from organisms that leave their shells in the mud on the ocean floor. What is chemical sedimentary rock? Response: Chemical sedimentary rock is …

Fossils Fossils are the remains or traces of plants and animals that have been preserved in sedimentary rock.

Sedimentary Rock Features Many sedimentary rock features can tell you how it was formed.

Stratification The most characteristic feature of sedimentary rock is stratification, or layering.

Stratification Strata will differ from one another depending on the size, shape, and color of the sediment.

Water and Wind When water and wind transport and deposit sediments, some unique patterns develop.

Dry Lake When the bottom of a lake is made of fine-grained sediments like clay, the sediment cracks as it dries, forming geometric patterns.

Parallel and Slanted Strata Not all strata is parallel, some strata is slanted. Wind and water can cause this strata to cross-beds.

Sedimentary and Metamorphic Rock What did you know? _____________________________________________ 2. What did you learn? 3. What do you want to know?

Questions Subject Area: Sedimentary Rock EQ: How and where does sedimentary rock form? Questions How does the two types of sedimentary rock form? How does sedimentary rock record Earth’s history?