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Making your road trips better for 45 years!

NEW
TO THE
SERIES!
ROADSIDE GEOLOGY OF IDAHO
Second Edition

PAUL K. LINK, SHAWN WILLSEY, AND KEEGAN SCHMIDT
The rocks of Idaho span a vast chunk of Earth’s long-lived history and
tell stories with many plot twists. Learn all about the remarkable geology
of the Gem State with this completely revised, full-color edition. The
authors, a trio of experienced fi eld geologists, guide you to outcrops
and roadcuts where you can stretch your legs and expand your mind.
416 pages • 6 x 9 • 265 color photographs
123 color illustrations • glossary • references • index
paper $28.00 • Item 209 • ISBN 978-0-87842-702-4

GSA Publications

Milestones

Geology continues its reign as the Geosphere’s impact factor was
#1 ranked geology journal for the 3.298, with a five-year impact factor
fifteenth year in a row. According of 3.571.
to Journal Citation Reports*, it had While Clarivate does not produce
a 2020 Journal Impact Factor of
S I S N 0 0 9 7 - 1 6 1 3 J U N 2 E 0 2 1 VOL. 49 NO. 6 P. 609–752 impact factors for book series, it
5.399 and a five-year impact factor indexes GSA’s Special Papers,
of 6.079. Memoirs, and Reviews in
The Geological Society of America Engineering Geology in its Book
Bulletin’s impact factor was 4.799, Citation Index, which is part of the
with a five-year impact factor Web of Science.
of 5.197. *Journal Citation Reports™, Journal
Impact Factor™, and Web of Science™,
from Clarivate, 2021.

Explore GSA’s journals and books at
https://www.gsapubs.org.

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