Saturday, July 30, 2016

North Ajo Peak
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Layers, from the top:

Rugged basalt (?) layer - tilted, scarred. White shapes on a dark-gray rock.

Thin red layer - soil? tilted, uniform width over several hundred meters

White layer (Coconino Sandstone?) - thick, anticline, like an ancient mountain 
range, one ridge covered with the red layer, other cross-cutting ridges 
fully exposed

Brighter white layer, thin

Farther south, scarred steep-angled white shapes in the background reddish-white
rock.
  One figure shows up repeatedly: like half the Freemason symbol; one compass.

Locomotive Fanglomerate layer - large and small diverse boulders encased in 
red rock

Cardigan Gneiss - outcrops in the valley to the east of North Ajo Peak

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Mixings between layers

Sharp and linear and contrastive boundaries for hundreds of meters
Interleaved banding in places
Banding across rock type boundaries in places
Smooth blending in places - this is what Thermodynamics would predict

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Thunderstorm with lightning overnight

Lightning in East, very frequent, constant strikes so the sky was flashing 
all the time

Strong winds moving from West to East

Lightning moved overhead

Thunder two-three seconds later

Rain

At dawn, the wind was from the North. Later on that morning, the wind was from 
the South West, then South.

The wind moved around the points of the compass in a counter-clockwise direction.

The Eye of low pressure passed overhead, or nearby.