Geomorphology Weekly Notes 5-1.htm
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <!-- Created from PDF via Acrobat SaveAsXML --> <!-- Mapping table version: 28-February-2003 --> <HTML> <HEAD> <META name="dc.title" content="Erosion Processes & Landforms" > <META name="dc.date" content="2009-08-13T11:04:11-04:00" > <META name="dc.date.modified" content="2009-08-13T11:04:15-04:00" > <META name="generator" content="Adobe Acrobat Exchange-Pro 7.8" > </HEAD> <BODY bgcolor=white text=black link=blue vlink=purple alink=fushia > <DIV class="Sect" ><DIV ><P align="justify" ><FONT size="+1" color="#000000"></B>Erosion Processes & Landforms<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Rock Weathering - Solar Energy - (Exogenic)<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Chemical Rx & hydrothermal<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Ground h2o 10-20 km below surface<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">(Weathering & solution)<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Disintegration vs. Decomposition<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Exfoliation Domes - Sheet Erosion<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Rock mass strength - (Diamond - H 10 vs. Talc - HI)<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Rosen's Law - fragments inverse to size<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Rock fracture - Pressure release & expansion<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Thermal contractions<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Crystal growth<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Sedimentary rock - coal<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Igneous - granite<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">(Sheeting) (Mineral differences)<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Quarry Rock Bursts<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Continuous Joints vs. Short<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Thermal expansion<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Volcanic Steam (surface/depth/color/fire)<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Salt & Crystal Growth - Iron oxide / salt precipitation<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Rock salt - Salt Hydration<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Aluminum in desert soils<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Gypsum is result of acid rain reaction<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Tafoni - Weathering pits of desert - near coasts - Rain/dew/fog<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">- Namib Desert, South West Africa<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Above spray zone on coast<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Frost wedge (H2o) expands 9% (permafrost)<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Biodegradation - mineral root/rock interaction<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Physical (6x) greater than chemical oxidation of mineral/weathering<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Carbonation - Rx with C02<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Hydolysis - h20 chem rx<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Hydration - add h20<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Chelation and exchange- oxygen in blood.<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Mineral to Organic compounds<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Dissolution - Congruent if components all soluable<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Incongruent if all components are not in solution.<FONT size="+1"> </P ><P align="justify" ><FONT size="+1">Oxidation- Pyrite FeS2 (fools gold) (yellow)<FONT size="+1"> </P ></DIV ><DIV ><P align="justify" ><IMG width="84" height="60" src="images/Geomorphology Weekly Notes 5-1_img_0.jpg" ></P ></DIV ></DIV ></BODY> </HTML>
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rsadoo. (Aug 17, 2009). Geomorphology Weekly Notes 5-1.htm. Retrieved Nov 06, 2014, from UMass Boston OpenCourseware Web site: http://ocw.umb.edu/environmental-earth-and-ocean-sciences/eeos-302-geomorphology/Geomorphology%20Weekly%20Notes%205-1.htm.