List of Slides for Big Bend NP
- The Chisos Mountains, made of volcanic rock,
occupy the center of Big Bend NP.
- Volcanic plugs resemble trees.
- Other parts of the park consist of interbedded
layers of sedimentary rock and volcanic ash.
- The Rio Grande forms the southern boundary
of the park, and of the United States in this region.
- Where tectonic activity has produced mountains that lie across the
path of the river, the Rio Grande has cut spectacular canyons.
- Santa Elena Canyon, the westernmost canyon
in the park, was cut through faulted and uplifted Cretaceous limestone.
- The canyon walls reach a height of 1500
feet in places.
- Sandy beaches make camping spots for
people floating down the river (float trips by permit only).
- Erosion produces rock falls in the canyons.
- Boquillas Canyon, the easternmost and longest
canyon in the park, cuts through the Sierra del Carmen mountain range.
- Wind-blown sand is deposited along the side
of Boquillas Canyon.
- Wind carrying sand can abrade and polish bedrock
surfaces.
- Archeologists study corn-grinding pits and
other traces left by prehistoric inhabitants along the Rio Grande.
- Yucca blooms in the desert.