BY TRAIL

Zion Lodge to Great White Throne 2

Zion Lodge to The Narrows 6

Zion Lodge to Summit of Angels Landing 2.5

Zion Lodge to Observation Point 12

Zion Lodge to West Rim 12

Zion Lodge to Ranger Station 5

Zion Lodge to Summit of Lady Mountain 2

Bryce Canyon Lodge to floor of Canyon and return 1

Bryce Canyon Lodge to Tropic 11

Bright Angel Camp to Bright Angel Point .5

Bright Angel Camp to Point Imperial 9

Bright Angel Camp to Cape Final 12

Bright Angel Camp to Cliff Spring 15

Bright Angel Camp to Cape Royal 16

Bright Angel Camp to Cliff Dweller Spring 1

Bright Angel Camp to Point Sublime 35

V. T. Park Tourist Ranch to Point Imperial 22

V. T. Park Tourist Ranch to Cape Final 25

V. T. Park Tourist Ranch to Point Sublime 23

[Illustration: _Interior of Guest Lodge, Zion National Park and Bryce

Canyon_]

Stratified Rocks of Cedar Breaks, Bryce Canyon, Zion Canyon, Grand

Canyon and Intermediate Regions

Rearranged and visualized principally from unpublished studies of Willis

T. Lee, by courtesy of the National Parks Association.

These strata presumably were once continuous over the entire Plateau

Region and the Grand Canyon. Many were much thicker than now, having

been eroded during long periods when the surface was temporarily lifted

above sea level. Altogether they may cover a creative period exceeding

ninety million years. Strata are said to be unconformable when they do

not lie in regular, parallel sequence.

Read table from bottom upward for historical sequence.

Zion National Park, Bryce Canyon, Cedar Breaks, Kaibab Forest, North Rim of Grand Canyon · 第 45 / 50 题