Rachel Bowman shows off Cretaceous Period shark teeth she found on the last PEEC trip to Shark’s Tooth Ridge. Courtesy/PEEC
The last time the Pajarito Environmental Education Center (PEEC) offered a trip led by local geologist Patrick Rowe to Shark’s Tooth Ridge, the trip filled up with a waiting list.
Rowe is an active member of the Los Alamos Geological Society. He regularly leads field trips for the Society and for PEEC.
Back by popular demand, PEEC is again offering the trip to this aptly-named site near Cabezon, where participants of all ages can expect to find samples of Cretaceous Period shark teeth. The day trip is Saturday, March 15.
It’s hard to imagine New Mexico was once under the sea, but during the Cretaceous Period, between 145.5 and 65.5 million years ago, much of the state was. Because of this, remains of shark teeth can be found at the site named Shark’s Tooth Ridge, less than two hours from Los Alamos.
Participants on the trip will look for the five different species of shark’s teeth that can be found at this location. In addition, they will look for septarian nodules, which are also known as “dragon stones,” due to their sometimes scaly appearance.
The nodules in this area often contain open pockets with beautiful calcite and barite crystals, making them special samples to take home. Participants of all ages are welcome to join, and the inevitability of finding samples makes this an excellent trip for kids.
The group will meet at PEEC just before 8 a.m. to carpool to the site. Those who live in Santa Fe or Albuquerque can alternatively meet the group at 9:30 a.m. in San Ysidro, which is near the site.
The cost per person is $10, or $8 for PEEC members. For families, the cost is $20 or $16 for PEEC members, regardless of how many go. Advance registration is required, and those interested are advised to register soon, as this is expected to be a popular trip.