Annual Field Trip

Bastrop Field Trip - Dec 4-6, 2026

On Friday, Dec 4th we will visit siliciclastic outcrops of the Wilcox Group (Sabinetown Fm) and Carrizo Sandstone. Outcrops contain excellent examples of coarsening-upward progradational tidal deltaic successions and tidal flats that also include tidal channels and tidal bars. We will discuss significant facies changes and key surfaces as well as biostratigraphy that allows us to correlate the outcrops with deeper-water Wilcox deposits including the Middle Wilcox and Yoakum shale.

We will spend Friday night in San Marcos. On Saturday we will head up into the Hill Country near Canyon Dam to examine Cretaceous carbonates of the Glen Rose Formation and will discuss the evolution of carbonate systems. This stratigraphy includes the Corbula Texana bed that divides the Glen Rose into a lower and upper member. We will also examine the Hidden Valley Fault Zone.

Itinerary

Friday Dec 4 - Day 1 - Wilcox Group with Pete Flaig

9:30 am - Meet at Buckee's in Bastrop 1700 Highway 71 E, Bastrop TX 78602 - Overview of the Wilcox Group. Breakfast is on your own.
10:00 am - 12:00 pm - Visit Outcrops 1 & 2. These include short hikes to local Wilcox outcrops in the Bastrop area. Hikes will include some moderate terrain and slight inclines. Furthest hike is 1/2 mile out
12:00 pm - Drive to lunch location @ Neighbor's Kitchen & Yard 601 Chestnut St Bldg C, Bastrop TX 78602.
~1:30 pm - 4:00 pm - Visit Outcrop 3. Optional Outcrop 4 if time permits
~4:00 pm - Drive back to Melrose River Club for group dinner.

Saturday Dec 5 - Day 2 - Central Texas Cretaceous Carbonates with Kelly Hattori

9:15 am - Meet at Canyon Lake Gorge for private tour.
12:00 pm - Lunch (location tbd)
1:00 pm - Drive to Guadalupe River State Park to examine Cretaceous Carbonates, Karst Topography, and the Balcones Fault Zone.
4:00 pm - Drive back to Melrose River Club for Group Dinner

Sunday Dec 6 - Travel back home

Lodging - Melrose River Club

THE ONLY HOTEL ON THE SAN MARCOS RIVER

Boutique cabins, resort pool & bar

Adults-only - 30 minutes from Austin, TX

The Melrose River Club, a luxe country camp/hotel set in a 12-acre park overlooking the beautiful spring-fed San Marcos River. Expect an unpretentious atmosphere that is just a little bit swanky…all within a 30-minute drive of Austin, TX.

A group block is available here: Melrose River Club. You are responsible for securing your own lodging. Rooms will be held in the block until Monday, October 5th.

Melrose River Club

70 Riverbend Dr

San Marcos, TX 78666

Price - TBD

Field trip fee includes:

Lunch & dinner Friday
Breakfast, lunch & dinner Saturday
Canyon Gorge Tour
Guadalupe River State Park entrance fee
Two expert field trip guides (Kelly Hattori & Pete Flaig)

For more information, to secure your spot, or to sponsor, email AWGLonestar@gmail.com

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