Shape of Particles Angular Subrounded Wellrounded Clastic rocks

Shape of Particles Angular Sub-rounded Well-rounded

Clastic rocks: Sedimentary Rocks Angular clasts Rounded clasts

Non-clastic Sedimentary Rocks Fine particles Layered

Conglomerates have rounded clasts Breccias have angular clasts Angular clasts did not erode far from where the rock formed. Clast refers to the fragments of rocks.

Arkose # 11 Arkose is a raw, coarse-grained sandstone, Clastic sedimentary rock http: //geology. about. com/od/rocks/ig/sedrockindex/rocpicarkose. htm

Gypsum # 12 Rock gypsum is an evaporite rock that forms as shallow sea basins or salt lakes Chemical sedimentary rock http: //geology. about. com/od/rocks/ig/sedrockindex/rocpicarkose. htm

Sandstone # 13 Sandstone rocks are sedimentary rocks made from small grains of the minerals quartz and feldspar. http: //www. fi. edu/fellows/fellow 1/oct 98/expert/sandstone. htm Clastic sedimentary rock

Shale # 14 Shale forms from the compaction of silt and clay that we commonly call "mud". Shale is best for fossil collection. Clastic sedimentary rock http: //geology. com/rocks/shale. shtml

Limestone # 15 Limestone form organically from shells and corals. Biologic sedimentary rock http: //geology. com/rocks/sedimentary-rocks. shtml

Conglomerate # 16 A conglomerate is a rock consisting of individual clasts within a finer-grained matrix that have become cemented together. Clastic sedimentary rock http: //en. wikipedia. org/wiki/Conglomerate_(geology)

10. What is the difference between layer and foliate or band? Layered due to compaction Clastic sedimentary rock Foliation Due to heat and pressure Foliated metamorphic rock

Slate # 24 Slate is the lowest grade of metamorphic rock. Parent rock is the sedimentary rock shale. http: //geology. about. com/od/rocks/ig/metrockindex/rocpicslate. htm

Schist # 23 Schist is formed by regional metamorphism. Slightly Foliated rock. http: //geology. about. com/od/rocks/ig/metrockindex/rocpicschist. htm

Gneiss # 25 Foliated rock. Gneiss ("nice") is a rock of great variety with large mineral grains arranged in wide bands. http: //geology. about. com/od/rocks/ig/metrockindex/rocpi cgneiss. htm Forms deep beneath the ground or regional metamorphism.

Amphibolite # 21 Contact is a non-foliated metamorphism metamorphic rock that forms through recrystallization under conditions of high viscosity and directed pressure.

Marble #22 Marble is a non-foliated metamorphic rock that is produced from the metamorphism of limestone. It is composed primarily of calcium carbonate. http: //geology. about. com/od/rocks/ig/metrockindex/rocpicmarble. htm

Anthracite # 26 Metamorphic Rock Highest Quality of Coal Known as "Hard Coal“ Non-Foliated rock. http: //earthchanges. swsd. wikispaces. net/Matthew. ED 21%27 s+Portfolio