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Colorado Scientific Society – Earth Sciences since 1882

The oldest scientific society in the Rocky Mountain region

Founded in 1882, the Colorado Scientific Society promotes knowledge, the understanding of science, and its application to human needs.
We focus primarily on earth science, welcoming members with interests in all fields of science. Learn more.


CSS January 2026 meeting, Gussie Maccracken about Evolution and recovery of plant life across the Cretaceous–Paleogene mass extinction
CSS January 2026 meeting, Gussie Maccracken about Evolution and recovery of plant life across the Cretaceous–Paleogene mass extinction

Click to Join or Renew your Colorado Scientific Society Membership
Membership dues paid in November and December also apply to the following year.

Social Media accounts for Colorado Scientific Society

Instagram (@coloradoscientificsociety)

Bluesky (@coloradoscientific)

We will post announcements like meetings, talks, field trips, and student opportunities on these sites.


Future Colorado Scientific Society Meetings and Field Trips

We normally hold monthly meetings from September through May.
Our meetings are normally now both in-person and virtual.



CSS March Meeting

Thursday, March 19, 2026

Dr. Nicole Peavey, Staff Paleontologist at the Colorado Department of Transportation
a “Dino first responder”.

Dr. Nicole Peavey
Dr. Nicole Peavey

In-person Meeting at Calvary Church, Golden, enter off 14th Street
All are welcome – no admission charge
6:30 pm – Social time begins
6:45 pm – Join Zoom meeting, if attending remotely
7:00 PM – Meeting starts.
Please arrive early. Church doors are locked, and you must text someone to get in after 7:00 pm.

The link to Join CSS March Meeting via Zoom will be added here

The Abstract of the meeting and images will be added here.


In-person Meeting at Calvary Church Golden

All are welcome – no admission charge

6:30 pm – Social time begins at Calvary Church Golden. Enter off 14th St.
6:45 pm – Join Zoom meeting, if attending remotely
7:00 PM – Meeting starts.
Please arrive early. Church doors are locked, and no one will be at the door to let you in after 7:00 pm.

Calvary Church in Golden. Enter at arrow on map.
Calvary Church Golden. Enter at arrow on map.

1320 Arapahoe St, Golden, CO 80401
Click on link to open a Google map.

Enter off 14th St., going in via the main glass doors on 14th St.
Do not enter the old church above 13th St.
Go through building following the CSS signs to the Community Rooms 1 and 2, where we meet.

The church doors must stay locked, and we will have a person to let you in at the doors off 14th st.
They want to see the presentation too, so please arrive before 7:00 pm.
There will be a phone number that you can text to be let in if you arrive late.

Parking
On street parking is available close by, west of Washington Ave in downtown Golden. The “Public Parking” NE of the Church is free for registered church members but not for us. Lowest parking rate is $5.75 for three hours; one pays using a QR code shown on signs there. For that parking rate, it says one is supposed to park on the upper (roof top) level. When driving uphill (southwest) on 14th St, the rooftop entrance is the 2nd entrance to the parking structure, immediately before the church.

For free parking: 14th Street usually has parking within a block of the entrance to the Church. Coming from the north (CO 93) or northeast (CO 58, between North and South Table Mountains), come southeast on Washington Street, turn right (southwest) on 13th Street, Turn left on Cheyenne St. Go up the hill and turn right on 14th Street. Park on your right.
Coming from the east or or southeast on US 6 (6th Ave.), exit US 6 onto 19th St. going NE. Turn left on Illinois St. Go through the Mines campus and turn right on 14th St. If you can, park NE of Cheyenne St.

When 14th Street is full, Mines may have scheduled an event.
There is Golden city parking southwest of downtown Golden. This is downhill from (northwest of) the Church in the half block between 13th and 12th streets, between Arapahoe St. on the SW and Miners Alley on the NE. There is usually space here. The Foss Lot (SE half of the parking area) is private and says “Paid Parking”. The public Arapahoe Lot (NW half of the parking area) says “Paid Parking 7-5” and should be free.
To get to the meeting, go up the hill along the church by Arapahoe St.

You can also find parking in the streets below (north of) the Church and west of downtown Golden.

Copies of The Geology of Boulder County by Raymond Bridge (2004) will be available for $20.



CSS April Meeting

Thursday, April 16, 2026
Dr. Eric Roberts, Colorado School of Mines, Department of Geology and Geological Engineering

In-person Meeting at Calvary Church, Golden
All are welcome – no admission charge
6:30 pm – Social time begins
6:45 pm – Join Zoom meeting, if attending remotely
7:00 PM – Meeting starts.
Please arrive early. Church doors are locked, and you must text someone to get in after 7:00 pm.

The link to Join CSS April Meeting via Zoom will be added here



Click to Join or Renew your Colorado Scientific Society Membership

Please pay your CSS dues for 2026!

You may pay dues online or print out a PDF of the membership form and mail it to us with a check. Continuing your membership in CSS will enable us to continue all our ongoing programs, including our field trips, virtual meetings, Student Research Grants, and more.

See Membership and Donations for the CSS membership PDF and our online membership payment form.
Regular CSS Membership is $25;
Student Membership, $5;
Life Membership, $395.
Send your membership payment, if not done through our online membership payment form, to Colorado Scientific Society P.O. Box 150495 Lakewood, CO 80215-0495.
Thank you!

New and renewal memberships in November and December are also good for the next year.


Read past Colorado Scientific Society Newsletters


Archive of Past Colorado Scientific Society Meetings
Including video recordings of most meetings


About the Colorado Scientific Society

The Colorado Scientific Society was founded in 1882 as a forum for the exchange of observations and ideas on the topics of earth science. Lecture topics largely focus on earth science, and are open to the public. In addition to our monthly lecture series, the society is also active in public service. We fund student research grants, construct and post signs that describe local geologic features, and organize and lead field trips.

The Colorado Scientific Society normally meets on the third Thursday of the month from September through May. (In the summer months of June-August, too many members are out in the field.)
6:30 – Social time at in-person meetings
6:45 – Join Zoom meetings
7:00 – Meeting and Program begin


The Colorado Scientific Society is an Associated Society of the Geological Society of America


Please send comments about the Colorado Scientific Society website to ColoSciSoc.webmaster@gmail.com .


We meet at the Calvary Church in Golden and appreciate them sharing their facilities.


We have our December Business Meeting and Potluck Supper at New Terrain Brewing Company and appreciate their support.


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