Sedimentary Geology 186-455Introduction... Academic IntegrityMcGill University values academic integrity.. Why Sedimentary Geology? Resources Most of the world’s energy supply comes f
Trang 1Sedimentary Geology 186-455
Introduction
Trang 6Academic Integrity
McGill University values academic
integrity Therefore all students must understand the meaning and
consequences of cheating, plagiarism and other academic offences under the Code of Student Conduct and
Disciplinary Procedures (see
http://www.mcgill.ca/integrity for more information)
Trang 7 Boggs, S Jr., Principles of
sedimentology and stratigraphy
Englewood Cliffs, N.J : Prentice Hall, 4th
edition
Trang 9Why Sedimentary Geology?
Resources
Most of the world’s energy supply comes from fossil fuels derived from sedimentary rocks
Mineral deposits (e.g., stratabound ores, MVT deposits)
Water in aquifers
Construction materials
Trang 11The Hydrocarbon Society
In 2001, about 39% of Canada's
primary energy production was from
natural gas, followed by oil (25%),
hydropower (20%), coal (11%), and
nuclear power (5%)
~3/4 from sedimentary rocks
Oil is the world’s most important energy source (~36% of total consumption)
Trang 12Why Sedimentary Geology?
Employment
Trang 13Why Sedimentary Geology?
Earth and Life History
Sedimentary record contains information about past tectonic movements, sea-level change, climates, etc.
Sedimentary record hosts the history of life
on Earth
Trang 15Marine cement
Trang 16Capitan Limestone Reef Reconstruction
Trang 18Why Sedimentary Geology?
Environment
Sedimentary record contains most of what
we know about global change on geologic timeframes
Modern sediments can record recent
physical/chemical/biological environmental changes
Geosphere<->biosphere interactions
Contaminants in aquifers
Trang 22Why Sedimentary Geology?
Hazards/Engineering
Sediment transport/erosion affect
engineering works (e.g., harbours,
Trang 28It was predicted:
there are 10,000 people dead, the city government's been relocated to the
north shore of Lake Ponchartrain,
refugee camps have been set up and there $10 billion plus in losses, what then?"
Shea Penland, Geologist, Dec 2000
Trang 29Why Sedimentary Geology?
Trang 30Book Cliffs, Utah
Trang 31Reef front – Red Sea
Trang 32100 msec
One km
Posamentier, 2005