About Roseanne Chambers

As a geologist, and an enthusiastic traveler and hiker, I am continuously curious about how landscapes form and how our environment shapes human history.

Cultural and Climate Changes Recorded in Rock Art

Rock art by ancient Native American artists includes images of large mammals that are now extinct, the hunting weapons that people used, and much more. We can learn valuable information about ancient lives, traditions, and landscapes from rock art images when they are fit into the context of cultures and time.

By |2021-05-21T08:52:31-07:00May 21st, 2021|Fabulous Fossils & More|2 Comments

Mysterious Rock Art – Barrier Canyon Style

Masked faces on ancient life-sized, mummy-like figures form a long line on the rock wall of a shallow alcove in a remote part of southern Utah. Known as the Great Gallery, the 200-foot-long (61 m) panel contains around 20 eerie looking triangular-shaped bodies with small heads. many researchers consider them among the finest examples of rock art in the Americas.

By |2021-05-13T14:31:31-07:00May 13th, 2021|Fabulous Fossils & More|4 Comments

A Few Facts: Volcanic Explosions

Volcano-watchers have had lots of excitement lately with the ongoing eruptions on the Reykjavik Peninsula in Iceland and Soufriere, on the West Indies island of Saint Vincent. So far both eruptions are fairly small. Colorful graphic representations of the relative sizes of volcanic eruptions are intriguing, although variability in natural events confounds human attempts to assign neat boxes or bubbles to these phenomena.

By |2021-04-22T06:30:04-07:00April 22nd, 2021|Our Amazing Earth|4 Comments

Dinosaurs of Ghost Ranch

The ghosts of famous artists–and of several hundred dinosaurs who perished in disastrous floods–could be roaming the landscape of Ghost Ranch in north-central New Mexico. This high desert region with steep cliffs and colorful rocks has a long and rich history. Finally visiting Ghost Ranch during a recent road trip, I was captivated by the beauty and the history of the place.

By |2021-04-15T06:01:27-07:00April 15th, 2021|Fabulous Fossils & More|12 Comments

Finding Fossils: Trilobites and Traces

California encompasses tremendous diversity, and this includes rocks of virtually every age, reflecting a long and dynamic geologic history. I'm fond of all types of rock, but my favorites are shales, sandstones and limestones that preserve evidence of ancient plant and animal life. The older the fossils, the more interesting.

By |2021-06-25T19:21:55-07:00April 8th, 2021|Fabulous Fossils & More|4 Comments

Viewing Volcanic Eruptions

Watching a volcano erupt is exciting–and people all around the world now have opportunities to see these dramatic performances! The new volcano on the Reykjavik Peninsula in Iceland is getting lots of attention, as is Mount Etna in Sicily. Also, the eruption that began at Kilauea on December 20, 2020 is continuing and the lava lake is deepening.

By |2021-03-24T09:38:18-07:00March 24th, 2021|Our Amazing Earth|0 Comments
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