Tuesday, May 29, 2018

#fieldworkfail BINGO

This space has been fairly quiet this year, and while I'd like to blame my lack of posting on work, the truth is that most of the blame falls on ye olde personal life, which has been in a dumpster since early November. But rather than going into the sordid details here, I'm going to post on something that was big on Twitter a couple months ago, thereby continuing my present trend of running behind (on the blog — thankfully not elsewhere).

Yes, that's it: #fieldworkfail BINGO. I present an unadorned, unplayed BINGO card:
It was Kat Black who presented this Bingo card to fieldwork-Twitter (largely but not entirely composed of biologists and geologists of various flavors), back on the 30th of March. Most of the entire ensuing Twitter convo can be read here (though I don't know how long Twitter-search keeps things available, so maybe the link will fail in the future).

Thinking about my field work history in some detail, I created this BINGO card from my experiences. As you can see, I did get a BINGO. Without the free space in the middle, though, I wouldn't have made it.
By way of a little explanation, I've added a few details in the next version of the same Bingo card:
You might notice that I replaced "Animal attack" with "Plant attack" and added an extra mark. While I've been stared at closely by 3 to 4 coyotes at once and also by a protective stallion once or twice —  the former causing me to unnecessarily grab my rock hammer and the latter causing me to give up on that canyon for that day —  I've never been attacked. I have, however, been mercilessly attacked by wild cholla balls, which definitely have a mind of their own and can be quite persistent in trying to attach themselves to parts of your body, especially feet and legs.

(I've had a few close encounters with wild cats — mountain lions, bobcats, and a possible jaguar — and I've come closer than I prefer to snakes several times, and closer than they prefer judging by their rattles or swift slitherings away from me — but these were merely close encounters, with none of them resulting in anything resembling an attack.)

In my line of work, especially when doing mineral exploration recon, a moderately routine hazard not listed would be getting shot at or being run off a property with a gun, which has happened to me once (American Girl), maybe twice or thrice —  although the second time was unclear and so probably doesn't count (Old Woman Mountains), and the third time was merely a threat without any visible gun brandishment (Tumco). In addition, there can be various helicopter-related hazards, the least hazardous of which might be being left out by the helicopter pilot, who for various reasons, including forgetting part of the crew (me!), might not pick you up —  a story that was told in brief here.

Tuesday, May 22, 2018

Orbicular Granite

I've been meaning to get to this post for sometime, seeing as how the trip was made in the summer of 2017, and the post related to this one, set earlier in the same day and not all that far back up the road, posted in September of last year. What we'll see here is some unexpected orbicular granite, found by MOH.
In this post, you'll see several pictures of orbicular granite, which in this case is composed of orbicules with dark centers and lighter outer rims.
I didn't collect a single specimen, partly because the outcrop didn't lend itself to being hammered on, partly because it seemed like the single outcrop should be left alone.

The inner dark center of most orbicules consists of black, interlocking and sometimes radial crystals of probable amphibole. It's fairly common that the next and only other layer is the outer rim of nearly white feldspar (not sure what kind), but in some cases (above and below) the second ring is composed of a white and black ring of intergrown feldspar and mafic mineral (pyroxene or amphibole are most likely), with white feldspar forming a third ring outside the second ring. The outer light-colored ring sometimes shows hints of actually consisting of as many as four or more separate feldspar-dominated rings or layers.
I'm not really up on the formation of orbicules, so if anyone with more knowledge than I wants to jump into the comments and explain, that would be great.
The discoverer of this small exposure provides a bit of scale for the orbicules, including a few protruding like eggs from the rock mass. It looks like many of the small spaces between the larger, often touching orbicules contain smaller orbs.
This particular orbicule appears to have at least three identifiable outer feldspar shells, set apart by somewhat vague mafic rings.
Bonus grebe.

I'm not giving details of the location of this tiny outcrop in order to preserve it. I didn't find anything about this locality by Googling, so this might be a new discovery.

Friday, March 23, 2018

Links: Field tripping in Nevada, mostly along I-80 and Highway 50

A River Runs through It [link to download], ESW 2016, E-59 NBMG: Truckee River Reno to Pyramid Lake

1915 Pleasant Valley earthquake centennial field trip guidebook: A public field trip to visit the largest earthquake in Nevada's history [link to download] E-58 NBMG: 50 miles south of Winnemucca

Fire and Ice—Geology of the Mount Rose quadrangle, Lake Tahoe, and the Carson Range [link to download pdf], ESW 2015, E-57 NBMG: Galena Creek Visitor Center to Incline Village

Carson Rocks! A Sesquicentennial Celebration of some of our Capital City's Geological High Points [link to download pdf], ESW 2014, E-56 NBMG: around Carson City

Geo- and Eco-Mapping around DRI (The Great Altered Rock Walking Tour) [link download pdf], 2014, E-55, NBMG: around DRI.

Mapping the Geology around the Desert Research Institute and Truckee Meadows Community College [pdf], ESW 2013, E-53, NBMG: around DRI.

"Tuff All Over": Exploring Faulted Volcanic Terrain in the Painted Hills, Virginia Mountains, West of Pyramid Lake [pdf], ESW 2012, E-52, NBMG: near Pyramid Lake.

"Life's a Beach": In Search of Ancient Shorelines and Volcanoes in the Grimes Point and Lahontan Mountains Area [pdf], ESW 2011, E-51, NBMG: near Fallon.

Geo-tripping in Nevada [pdf], NBMG map guide to many or most of the NBMG field trip guides in Nevada through E-50.

In search of Tufa, Tuff, and Tough Rocks [link to download pdf], ESW 2010, E-50, NBMG: stops are east of Pyramid Lake; trip guide includes Reno to Pyramid Lake, Pyramid Lake to Wadsworth, Pyramid Lake to Brady's Hot Springs, Brady's Hot Springs to Reno.

Digging Deeper into the Comstock [pdf], ESW 2009, E-48, NBMG: Reno to Gold Hill.

No Child Left Inside: A field trip for Families and Rockhounds [pdf], ESW 2008, E-47, NBMG: stops are near Fallon, east of Fallon, north of Fallon, and in the Truckee River Canyon along I-80; road guide runs from Reno to east of Fallon, Fallon to Trinity (junction of I-80 and 95), and Trinity to Reno.

Taking the Pulse of the Earth [link to download pdf], ESW 2007, E-46, NBMG: south of Reno (Slide Mountain, Steamboat, and Virginia Foothills; the latter two not available to public).

Rockin' Along the River [pdf], ESW 2006, E-45 NMBG: Truckee River Verdi to Wadsworth

The great Highway 50 rock tour [link to download], ESW 2005, E-44 NBMG: Fallon to Middlegate

The Frenchman lake frolic [link to download], ESW 2004, E-43 NBMG: Frenchman Lake area, California, west of NV-CA border.

Get out, stay out, and stay alive [link to download], ESW 2003, E-42 NBMG: north of Reno towards Pyramid Lake.

In search of "the right tuff" but you can just "take it for granite" [link to download], ESW 2002, E-41 NBMG: north of Reno and to the west toward northern end of Red Rock Road.

Fossils and Ancient Lakes [link to download pdf], ESW 2001 field trip #2, E-40, NBMG: fossils near Nightingale.

Peavine Peak: Geology, plants, and mining history [link to download], ESW 2001 field trip #1, E-39, NBMG: Peavine.

Exploring east of the summit: A field trip guide to Steamboat Springs, Lake Tahoe, and the Comstock area [link to download pdf], ESW 2000, E-38 NBMG: Steamboat Springs, Lake Tahoe, Comstock.

Geology along America's loneliest highway [link to download pdf], ESW 2000 E-37 NBMG: Carson to Sand Mountain.

What's shakin' in the neighborhood? -- Road log [link to download pdf], ESW 1999 field trip #2, E-34 NBMG:  Reno, Mt. Rose fan/pediment, to Genoa fault scarp.

Turbulent times in the Truckee Meadows [link to download pdf], ESW 1999 field trip #1, E-33 NBMG: UNR to Verdi to Crystal Peak Mine.

Ancient lakes and volcanoes near Fallon: Field trip for families and rockhounds [link to download pdf], ESW 1998, E-28 NBMG: Fallon, Grimes Point, Soda Lake.

Link to NBMG's entire Educational series; most (all?) are available to download.

INQUA 2003 - Elko to Reno, Wadsworth Amp, Lone Mtn hwy 50, Reheis - no viewing online at Google books

Geothermal energy helps power Nevada | Elko Daily Free Press - Brady's Hot Spring, Beowawe, and "Hot Hole" in Elko

The Stories Behind I-80s Exit Sign Names - Part 1 | Backyard Traveler by Rich Moreno - various info about signs and areas, e.g., Nightingale and Brady's Hot Springs

Touring California and Nevada hot springs | Matt C. Bischoff - Brady's Hot Springs reaches 209*F (and other tidbits)

Wednesday, January 31, 2018

Super Blue Blood Moon in northern California

I'm not sure why I woke up so early this morning, but I was up and reading various things on my smartphone and was reminded about today's eclipse of the moon. The eclipse was supposed to start not long after I was reading about it, and thinking that the maximum in my area was going to be at 4:51 am — which is actually when the total phase of the eclipse was going to start — I rushed outside with a headlamp and my phone to see if I'd be able to see it. While out there, I got the first photo, above, which is the moon looking like a tiny red ball. The time was 4:49 am.

Seeing how spectacular it all looked, I ran back inside and got my Nikon with its 18 to 200 mm lens and grabbed several shots while standing in snow and leaning against the camper in the front yard. I didn't realize the eclipse would be happening for nearly another two hours, so I took photos only of the early part of the red phase, which is the total eclipse phase.
The above photo is how the moon looked, without enhancement, at 5:07 am, about 20 minutes before the maximum stage of the eclipse, at 5:29 am, when the moon was at it's closest to the center of Earth's shadow. Read more here.

I went back inside and tried to go back to sleep.
Here I've enhanced the photo a little, but a 200 mm zoom doesn't really do that well with moon shots, so you should head on over to Geotripper to see some better photos by Garry Hayes, along with explanations about what the heck the terms "super" "blue" and "blood" refer to when describing a moon.

Friday, December 22, 2017

Twelve (or Ten?) Months of LFD (2017)

I'm doing the year-end meme wherein I compile the first sentence of the first post of every month. Meme rules are as follows, as per DrugMonkey (2014):
Post the link and first sentence from the first blog entry for each month of the past year.
I also add the first photo from the same first post. Previous takes on this Twelve Month meme at LFD were posted for 2008, 2009, 20102012, 2014, 2015, and 2016.

Aaand...here's the year 2017 for LFD:

January:
It's been icy cold in the far northlands, with temperatures hovering not too far above zero for several days.

February:
It was a late fall day, and I stopped along Route 447 to see if I could get close to some of the brilliantly colored trees along the Truckee River a few miles north of Wadsworth.

March:
I planned to have this descriptive section as part of the last post—the one about being packed and ready to leave town—but this "little bit" grew and grew, and eventually it had to find its own home.

April:
I was looking back through some photos and realized I had some of the Roan Cliffs from the spring of 2006.

May:
What is this?!!1?1!?
It all started when I was trying to find out what rock formations and rock types I was seeing while making the long trip to work and back out near Elko.

June:
I'm moving slowly on this mini-series about the Humboldt River while working essentially 12-hour days and while (hopefully) recovering from some long-lasting bug I caught on the road or out in Elko more than two months ago.

July:
Returning once again to my spring mini-series about all the rivers and lakes that are at higher levels than I've seen in quite awhile (most recent post), I decided this time to show a few pics of the Truckee River, which I drive by quite frequently.

August: Nothing.

September:
It's been a busy summer, such that I really haven't had time to get much blogging done—and I had so many good posts planned!

October:
This is a classic road song with "road" right there in the title, courtesy once again of MOH.

November: Nada.

December: (links to this post).
I'm doing the year-end meme wherein I compile the first sentence of the first post of every month.