Bone Deposition

Bone Deposition (HM2CGF)

Location: Morrison, CO 80465 Jefferson County
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Country: United States of America
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N 39° 40.777', W 105° 11.793'

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Inscription
Dinosaur bones were deposited here on the inside of a meander by a
fast-flowing stream. This deposit known as a "point bar" grew by the addition
of sand, causing growth of the point bar towards the outer bank and
downstream. Larger, heavier bones were deposited by a faster stream flow.
Closer to the edge, the stream was slower and shallower so that the small sand
grains and smaller bones were left behind. The bones are radioactive due to
chemical reactions where uranium-bearing groundwater deposited uranium
in the decaying bones.
Follow sand layers laterally and vertically as they represent individual point bars.
Note how layer 1 started out thick and pinched out as deposition migrated
downstream. Looking closely, notice larger sand grains (and sometimes larger bones)
at the base trending to smaller grains and no bones at the top.
The numbers in the photo and the drawing correspond to the different point
bar deposits. The layer marked 1 was deposited first and is the oldest of the 3 layers.
Details
HM NumberHM2CGF
Tags
Placed ByFriends of Dinosaur Ridge
Marker ConditionNo reports yet
Date Added Thursday, October 18th, 2018 at 8:01pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)13S E 483144 N 4392217
Decimal Degrees39.67961667, -105.19655000
Degrees and Decimal MinutesN 39° 40.777', W 105° 11.793'
Degrees, Minutes and Seconds39° 40' 46.62" N, 105° 11' 47.58" W
Driving DirectionsGoogle Maps
Area Code(s)303, 720
Closest Postal AddressAt or near 1941 W Alameda Pkwy, Morrison CO 80465, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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