Kenneth Hahn Park Geology Field Assignment by Drew Sinclair August 3, 2014
May 25, 2015
Kenneth Hahn Park Geology Field Assignment
by Drew Sinclair
August 3, 2014
About Kenneth Hahn ParkLocated in Los Angeles, California
The land was originally reclaimed for use as an oil drilling site
This park was created above the ground that was once the Baldwin Hills dam
Baldwin Hill dam was used to provide water storage in 1951, however it collapsed in 1963
Kenneth Hahn is one of the largest remaining natural space in the Los Angeles Basin
The makeup of this park has been constantly changed by human interference/ invasion
Lies above an earthquake fault
About Kenneth Hahn ParkThe Native Plant & Wildlife Garden
Invasive weeds and plants such as castor bean, fox tail grass, gazania, and species had to be removed.
Some Eucalyptus trees were removed because they smothered native plants, leaves and branches were fire hazards.
Native plants contribute to clean air and water by reducing irrigation
Plants have evolved with native wildlife helping to attract birds, insects an reptiles.
Eucalyptus TreePrior to the 1850, this tree did not
grow in California.
Originated in Australia
Abbot Kinney in 1886 to 1887 is responsible for the distribution of
the tree’s seeds throughout Southern California.
“The tree was well-suited as an ornamental tree or as a windbreak”
(Masters, 2012)
Today, the eucalyptus tree is a very popular staple in the architecture of
Southern California.
Pekin and Mallard Ducks
Originally bred in China
Brought to the U.S. in 1873
Characterized with a yellow bill , white fur, and orange shanks
“Too heavy to get airborne, gregarious and will usually group together.”
(Johnson, 2009)
Pekin DucksMallard Duck
Very popular in North America and Eurasia
Commonly fond in parks and ponds
Prefer wetlands whether natural or artificial
Characterized by dark green head and yellow bill
Oak TreeHistorically know for thriving in California
Adapted to different conditions such as “raced
hillsides, forested mountain slopes, and grew
on the savannas of the inland San Fernando, San Gabriel, and Santa Clarita valleys.” (Masters, 2013)
Sustained life for the indigenous people of Southern California.
The amount of oak trees began to decline once
people began to axe them for profit and lack of
proper care.
Sedimentary Rock- Sandstone
Made of sand-sized grains of mineral, rock or organic
material
Contains a mixture of clay sized particle mixed in between
the sand and grain
Used in manufacturing
The sand in the standstone can range from 1/16 millimeter to 2
millimeters.
Sedimentary Rock- MudstoneAlso referred to as claystone and slit stone
fine- grained, soft, yet hard and brittle
Clastic texture, clasts not visible to the naked eye
Grain is abut 0.06 mm
Colors vary
Commonly found with sandstone
Sedimentary Rock- LimestoneLimestone precipitated from water
Formed from marine organisms such as algae and coral
Can form from the cementation of sand
Resembles the appearance of sandstone or even mudstone
Varies in color
Smooth to rough touch often used for the base of cement
Shale and Phyllite
Shale
Similar to Phyllite
Can metamorphose into phyllite
depending on degree of heat and pressure
More susceptible to heat and pressure
Phyllite
Gives off light “reflection or
sheen” (Hobart, n.d)
Made up of fine- grained- mica.
Metamorphic Rock- Slate
Formed by the metamorphosis of mudstone or shale.
Very similar to Phyllite
Coarse- grained
Colors vary from black to certain shades of blue
Commonly used for roof or floor tile
Reference(2014). In Baldwin Hills Park. Retrieved August 3, 2014, from http://www.baldwinhills.info/
Anderson, V. (n.d.). In Vegetation of the Baldwin Hills. Retrieved August 3, 2014, from http://www.bhc.ca.gov/documents/vegetation.pdf
Rognan, C. (n.d.). In All About Birds. Retrieved August 3, 2014, from http://www.allaboutbirds.org/guide/mallard/id
Masters, N. (2012, May 16). In KCET. Retrieved August 3, 2014, from http://www.kcet.org/updaily/socal_focus/history/la-as-subject/who-eucalyptized-southern-california.html
Johnson, S. (2009). In Beauty of Birds. Retrieved August 3, 2014, from http://beautyofbirds.com/pekinducks.html
Masters, N. (2013, February 7). In KCET. Retrieved August 3, 2014, from http://www.kcet.org/updaily/socal_focus/history/la-as-subject/the-oak-trees-of-southern-california-a-brief-history.html
Hobart, K. (n.d.). In Geology.com. Retrieved August 3, 2014, from http://geology.com/rocks.html
(2005). In Geology Rocks and Minerals. Retrieved August 3, 2014, from http://flexiblelearning.auckland.ac.nz/rocks_minerals/rocks/limestone.html