Rock (photo) of the Week

Special treat today folks. We have a reader submission for rock (photo) of the week. This means somebody besides Mom reads my blog. It also means I'm not 100% sure what the hey is going on in this picture, only that there are lots of things going on. The first thing is that somebody is gonna need a bigger hammer to get this done right.

So what's up folks? What do you see in this Rorschach Ink Blot of an outcrop?

I want to recognise Elisabeth for authorising the use of this photo for you to analyse. See what I did there? Just finished this book, which I enjoyed very much. So much that I have been making a bunch of word nerd puns since I read it.

I would like Elisabeth to recognise that her institution stole the world's greatest university president from my institution. No hard feelings though.


Silver Fox said...

I see a fault with a narrow dike on it running right-left through the hammer, offsetting a dark dike that has at least two types of inclusions, one of which may be the lighter granitic rock to the right.

Bob said...

Looks to me like a plag phyric zenolith rich dike with orientated zenoliths, some of them the host granite. The dike is offset by a fault that is occupied by another dike, a fine grained, glassy looking one, possibly psuedotachyllite. At the top of the photo is a granite clast that right up against the side, looking like an undisplaced part of the granite. The thin chill margin on the larger dike is most visible on the right above the hammer.

A Life Long Scholar said...

I see the fault, but I also note that the dark part which SilverFox sees as offset is a noticeably different width above and below the fault, making me want to walk along it to see if, perchance, the offset is even greater and, in fact, these are two different dark units that were brought together by movement along the fault.

Elisabeth said...

heck if those aren't all great comments! now i have to see them side by side with the photo....

and I will acknowledge what my institution has done. but I have such a hard time calling a place "mine" -- I clearly would not make a good university president!

elisabeth said...

oh, one other thing -- I think the thing you are calling glassy and possibly pseudotachylite (running right to left and under hammer) is a quartz vein/dike.

Fault Rocks said...

Structure comment - no reason the offset on that little fault has to be parallel to the plane of the photograph. In fact I would guess it is not.

Bob said...

Oops. quartz veins aren't always white. I guess I was too eager for the exotic

Silver Fox said...

Ah, a quartz vein!

Also, because the offset units are intrusive, there's no way to really say that the offset on both units isn't somewhat similar, because we don't know the original shape of the dark-light contact on the right side of the photo - at least that was my original thinking.

Anonymous said...



情趣用品,A片,AIO,AV,AV女優,A漫,免費A片,日本AV,寄情築園小遊戲,情色貼圖,色情小說,情色文學,色情,色情遊戲,一葉情貼圖片區,色情網站,色情影片,微風成人, 嘟嘟成人網,成人,成人貼圖,18成人,成人影城,成人圖片,成人影片,UT聊天室,聊天室,豆豆聊天室,尋夢園聊天室,080聊天室,080苗栗人聊天室,080視訊聊天室,視訊聊天室



麻將,台灣彩卷,六合彩開獎號碼,運動彩卷,六合彩,遊戲,線上遊戲,cs online,搓麻將,矽谷麻將,明星三缺一, 橘子町,麻將大悶鍋,台客麻將,公博,game,,中華職棒,麗的線上小遊戲,國士無雙麻將,麻將館,賭博遊戲,威力彩,威力彩開獎號碼,龍龍運動網,史萊姆,史萊姆好玩遊戲,史萊姆第一個家,史萊姆好玩遊戲區,樂透彩開獎號碼,遊戲天堂,天堂,好玩遊戲,遊戲基地,無料遊戲王,好玩遊戲區,麻將遊戲,好玩遊戲區,小遊戲,電玩快打

麻將,台灣彩卷,六合彩開獎號碼,運動彩卷,六合彩,線上遊戲,矽谷麻將,明星3缺一,橘子町,麻將大悶鍋,台客麻將,公博,game,,中華職棒,麗的線上小遊戲,國士無雙麻將,麻將館,賭博遊戲,威力彩,威力彩開獎號碼,龍龍運動網,史萊姆,史萊姆好玩遊戲,史萊姆第一個家,史萊姆好玩遊戲區,樂透彩開獎號碼,遊戲天堂,好玩遊戲,遊戲基地,無料遊戲王,好玩遊戲區,麻將遊戲,好玩遊戲區,小遊戲,遊戲區,電玩快打,cs online

情趣用品,情趣,A片,AIO,AV,AV女優,A漫,免費A片,情色,情色貼圖,色情小說,情色文學,色情,寄情竹園小遊戲,色情遊戲,AIO交友愛情館,色情影片,情趣內衣,情趣睡衣,性感睡衣,情趣商品,微風成人,嘟嘟成人網,成人,18成人,成人影城,成人圖片,成人貼圖,成人圖片區,UT聊天室,聊天室,豆豆聊天室 ,哈啦聊天室,尋夢園聊天室,聊天室尋夢園,080苗栗人聊天室,080聊天室,視訊交友網,視訊