Showing posts with label Holiday Rocks. Show all posts
Showing posts with label Holiday Rocks. Show all posts

Monday, July 4, 2011

4th of July Rocks: Red, White, and Blue

Happy 4th of July, everyone! In honor of the 4th, here are some red, white, and blue rocks.
Red sandstone:
Red Standstone. Arches National Park, Utah, Fall 2005.

Newly-deposited white travertine:

Travertine forming in an alkaline pool. Oman, January 2009.

And, last but not least, brilliant bright blue kyanite crystals:

Blue kyanite. Image courtesy of Ian Stimpson's Flickr stream.

Monday, May 30, 2011

A Memorial Day Rock: Marble

Marble headstones at Arlington National Cemetery.
Photo taken from Wikipedia here.


On Memorial Day I always remember the trips I've taken to Arlington National Cemetery in Arlington, VA. I still remember my first visit to the cemetery. I was seventeen and applying to the United States Naval Academy. I was down in Washington, DC for the Naval Academy's Summer Seminar, an intense week that gives Naval Academy applicants a taste of what it's like to be a Midshipman. After hours of early morning PT with Navy Seals, fitness tests, mini courses, and serious hazing, the visit to Arlington was relaxing in a way. However, seeing row upon row of white marble tombstones also made me wonder if I really wanted to attend the Naval Academy. Was I cut out for this? Was I going to be able to spend enough time doing the science I love so much? Most importantly, was I willing to sacrifice for my country? Make the ultimate sacrifice?

I was admitted-- early action-- to the Naval Academy, and I almost went there. Some days I regret my decision to attend Dartmouth rather than the Naval Academy, and I wonder how different my life would have been if  had become a Midshipman. I would be stronger, I know. Tougher. Probably less self-centered and selfish. I tell myself that I turned down the Naval Academy because I wasn't going to be able to do enough science as a Naval Officer, but I know that's not a complete explanation. I know that I also turned down the Naval Academy because I was afraid. Afraid of war, of being mistreated as a woman, of a minimum eight year commitment, of not being able to follow an order I disagreed with, of fighting in a war I disagreed with, of danger, of violence, of death.

I may have turned down the opportunity to serve my country in the Navy, but I grew up in a military family. Many of my loved ones have served and still serve their country. My grandfather and father were both Naval Officers, and my cousin currently serves in the Air Force. Actually, the Mervine Family has a long history of military service, dating back to Rear Admiral William Mervine. There's even a Fort Mervine out in California.

I was too afraid to serve and sacrifice for my country, but there are thousands upon thousands upon thousands of people who were not afraid. Or maybe they were afraid, but they served-- and sometimes died-- anyway. Whenever I am down in the Washington, DC area, I try to make a point of visiting Arlington National Cemetery. Standing amongst thousands of matching marble headstones, I feel sadness, pain, and pride for all those who served and died for the United States of America. I may not agree with all of the wars in which these soldiers fought and died, but I still feel grateful for and humbled by the countless soldiers who sacrificed their lives. To all those soldiers-- at Arlington and elsewhere-- thank you. We remember you.

Christmas wreaths at Arlington National Cemetery, December 2005.
Photo taken from Wikipedia here.

Monday, February 21, 2011

A Presidents' Day Rock: Granite (& Mica Schist)

Presidents carved in granite. Image taken from wikipedia here.
Happy Presidents' Day, everyone!

Lab is nice and quiet today, in honor of our nation's presidents. Excellent. I always accomplish more on holidays! Fewer people around to distract me.

In honor of Presidents' Day, here is a document published by the U.S. National Park Service about the geology of Mt. Rushmore:

Mount Rushmore National Memorial Geologic Resource Evaluation Report

And here is a simple geologic map of the Mt. Rushmore area taken from the above document:
Simple geologic map of the Mt. Rushmore area. Figure taken from here.

Monday, February 14, 2011

A Valentine's Day Rock: Heartstones

A heartstone is a heart-shaped rock. Many different types of rocks can be heartstones; all that matters is the shape. Many heartstones form naturally through tricks of weathering; others are artificially chiseled and polished into a heart shape.

I  often look for heartstones when walking-- along a beach, a woodland path, or even a driveway. Whenever I find a heartstone, I think fondly of a bookstore called "Heartstone Books" that I used to visit in Putney, Vermont. Long before I ever studied geology in a formal manner, I used to enjoy looking at this bookstore's collection of heartstone rocks and was amazed at how many different types of rocks-- different colors and textures and sizes-- could become heartstones.

I am currently traveling and cannot take photos of my own heartstones, so below are a few heartstone pictures that I've scavenged from the interwebs.

Happy Valentine's Day, everyone!

Here are some more holiday rocks, in case you missed them:

A Birthday Rock: Peridotite

A New Year's Day Rock: Travertine Icings and Scums

A Christmas Rock: Fossiliferous Coal

A Thanksgiving Rock: Granodiorite

Hearstone 1. Image taken from here.

Wednesday, January 12, 2011

A Birthday Rock: Peridotite

Today is my birthday, so I am going to post some pictures of my favorite rock, which is peridotite. One of my committee members often refers to peridotite as "prettytite." I agree that peridotite-- which is comprised primarily of the minerals pyroxene and olivine-- is very, very pretty.

Image taken from here.

Saturday, January 1, 2011

A New Year's Day Rock: Travertine Icings and Scums

Happy New Year!

To celebrate the new year, here are some photos of some very new rocks. These travertines in Oman are some of the youngest rocks I've encountered in my geological wanderings.

These "icings" and "scums"  are travertines (mostly the mineral calcite) that are precipitating from highly alkaline (pH ~11-12) springs that form when rainwater circulates through mantle peridotite. Thin layers of newly-formed travertine (icings) often float on the surfaces of the alkaline pools. The first year I was in Oman (2009), there was a rare desert rainstorm that pushed the travertine icings to the bottom of the pools. The icings grew back with a few days, so we know that these travertines are very young indeed! Travertine scums often coat the bottoms of the pools, giving the pools a stunning bright turquoise color. 

I am studying the formation of these young travertines- and other types of carbonates- in the Samail Ophiolite in Oman. You can learn more about my thesis research here, and I'll surely blog more about this research in the future. For now, enjoy these pictures of beautiful, newly-formed, desert travertine icings and scums.

Travertine ice 1, Oman, January 2010.

Saturday, December 25, 2010

A Christmas Rock: Fossiliferous Coal

Merry Christmas & Happy Newtonmas, Everyone!

To celebrate, here are some beautiful pictures of coal taken from the interwebs. I'll take coal rocks like these in my stocking any Christmas!

Fossil ferns in coal from Morocco. Image from Wikipedia Commons.

Friday, December 10, 2010

What to Buy a Geologist for Christmas- Part II

My What to Buy a Geologist for Christmas post has been attracting some serious (well, for my little blog anyway) traffic over the past few days. Apparently, many people find my blog post by googleing phrases such as "geology christmas gifts," "geology gifts," and "what to buy a geologist." I guess many people are doing their Christmas shopping for their geologist friends and family!

Over the past few days, I've thought up another ten items that I think a geologist would like for Christmas. Again, please feel free to post your own suggestions for geological Christmas gifts in the comments!

Gift #1: Trilobite Jewelry from Surlyramics

Image from Surlyramics Etsy shop.

Saturday, December 4, 2010

What to Buy a Geologist for Christmas

Zayna (my cat) in my Newtonmas tree.
Christmas is just over three weeks away. If you're like me, you've recently put up your tree and a few decorations and are contemplating what to buy your friends and relatives. My family isn't religious, so we celebrate Newtonmas instead of Christmas. We call the holiday Newtonmas because Issac Newton, the famous mathematician and scientist, was born on Christmas Day. We celebrate Newtonmas on the same day as Christmas.

My family is very festive about Newtonmas. My mom often throws a science-themed Newtonmas Party, and we have all kinds of Newtonmas decorations, including a Newtonmas tree. The best thing about a Newtonmas tree is that you don't have to use an angel or a star as a tree topper (unless you want to). Rather, you can use anything you want! When we lived in Europe for a couple of years, we bought a little Napoleon doll and this has become our traditional tree-topper. Since I've moved out of the house and started putting up my own tree, I've used various stuffed animals and toys as tree-toppers. This year I'm using the little blue dragon from the "How to Train Your Dragon" movie. Because dragons are cute and are as real as angels, to me anyway. In honor of Newton, my family exchanges gifts and eats delicious food and even plays Christmas music. Because music is pretty, whatever your religious beliefs (or lack thereof).

Many of you may be wondering what to buy a geologist for Christmas/Newtomas. Below I've listed a few suggestions of gifts I think a geologist would like. Feel free to post your own suggestions for gifts in the comments!

And Merry Christmas/Chanukah/Newtonmas!

Gift #1: Geology Cake T-Shirt
Image from Threadless.com
This T-shirt is sold by Threadless.com here. Unfortunately, this t-shirt is currently sold out. Everyone should help request a reprint! A quick note is that geoblogger Callan Bentley pointed out in his NOVA blog that the angular unconformity cake/geology layer is highly improbable. Despite that, this is a fun t-shirt!

Cost: $18 (cheaper if it's on sale!). 

Thursday, November 25, 2010

A Thanksgiving Rock: Granodiorite

Plymouth Rock, image taken from Wikipedia Commons.

Happy Thanksgiving, everyone!

In honor of Turkey Day, I want to share with you an article by John McPhee, one of my all-time favorite writers. McPhee wrote an article about Plymouth Rock that can be read here: Travels of the Rock.

Like the Pilgrims, Plymouth Rock- which marks the Pilgrims' traditional, almost mythical landing place-- was a traveler. This rock is a glacial erratic, a piece of bedrock that was scraped up by a glacier and transported miles and miles from its original location. However, Pilgrim Rock didn't travel quite as far as the Pilgrims themselves... unless you count earlier Plate Tectonic wanderings. Most likely, Pilgrim Rock is a piece of Dedham granodiorite from Eastern Massachusetts and came from no further than Concord or Lexington, according to the McPhee article. However, whatever its origin, I can think of no worthier rock to commemorate the Pilgrims' voyage than a glacial erratic.