Geology Cafe

New York City vs. San Franciso Bay

How does the regional geology compare?

“Are you telling me you think the Atlantic is a better ocean than the Pacific?”
(Dinner table conversation in Woody Allen's1987 film - Radio Days.)
Geologic maps of the San Francisco Bay Region and the New York City region

So how do the two regions compare?


So, both regions are connected by Interstate 80 and share similar latitudes on opposite sides of the country.
So what else?
  San Francisco Bay Region Greater New York City Region
Population size ~ 12,000,000 ~25,000,000
Sports rivalries San Francisco Giants
vs. Oakland "A"s
New York Yankees
vs. New York Mets
Oceans

Pacific Ocean is "cold"
Hosts Monterey Canyon offshore
rocky coastlines

Atlantic Ocean is "warm"
Hosts Hudson Canyon offshore
sandy beach coastlines
Geologic Setting "Active" plate tectonic margin "Passive" continental margin
Mountain Ranges Coast Ranges are "young"
formed in last 4-5 million years (Late Cenozoic Era)

Appalachian Mountains are "old"
eroded remnants of mountains
formed in the Paleozoic Era

Glaciation Never experienced glaciation periods

Nearly completely covered by
glacial ice during last ice ages

Water

not enough...
Most water imported from
Sierra Mountains region

not enough...
Most water imported from
Catskill Mountains region
Bedrock Geology Mix of Mesozoic age
metamorphic and igneous basement rocks locally covered
by Tertiary sedimentary rocks
Mix of Paleozoic age
metamorphic and igneous
basement rocks locally covered
by Mesozoic and Tertiary sedimentary rocks
Fault Systems Lots of faults, many are active earthquake faults Lots of faults, most are
old and inactive
Major Hazards Fire, Earthquakes, Floods Fire, Floods, Hurricanes
Selected sources Rocks and Geology of the San Francisco Bay Region
Where's the San Andreas Fault?
Geology of the New York City Region

http://geologycafe.com/home/nycr_sfbr.html
11/25/2012