Page 43 - GSA Today December 2022

ACROSS DOWN
4 GSA’s online-only journal 1 Rock formed by the accumulation of large shear strain, in
7 Isolated hill or peak that projects through the surface of a ductile fault zones
glacier 2 Volcanic glass
9 It’s too dry to wash here 3 GSA’s iconic benefactor
10 Large volcanic depressions formed by subsidence and collapse 5 Process in which water chemically breaks down minerals
11 GEOLOGY’s most-cited paper featured experiments with this 6 Ropey basaltic rock
material 8 Dark, coarse-grained igneous rock
15 A scale of hardness used in classifying minerals 11 GEOLOGY articles are timely, innovative, and
16 Most common of lead minerals 12 “A generation comes, a generation goes, the
17 This horse won the Triple Crown in 1973 (the year the first remains forever.”
issue of GEOLOGY was published) 13 Vent that emits gases and vapors
18 “Big Al” (the 9-foot-tall boulder in the atrium at GSA head- 14 The geo-famous Florence
quarters) weighs 8 of these 16 GSA’s Twitter handle is @
19 Mount St. Helens is a 20 Another term for a volcanic mudflow
23 Ages and ages, in geology 21 GSA headquarters was located in this state until 1968
25 Fiery rock dust cloud 22 The frontier between igneous and metamorphic rocks
27 Wacky sandstone 24 Can you dig it?
31 Steep-sided, loosely packed volcano formed from ejected lava 26 Broad, low-relief volcanic crater
fragments 28 GSA’s first journal
32 Rippled, fining up formation 29 GSA headquarters is here
34 Amethyst color 30 GSA’s current president
35 The April 2007 cover of GEOLOGY featured these giants 33 Canyon sound
(some up to 11 m in length!) 36 GEOLOGY’s first article featured a proposal to abandon this
37 Above sea-level oceanic crust particle grade scale in favor of one based on the metric system
38 Someone who cannot pass a pretty rock without picking it up

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