Table Mountain

Join Laura, Zephyr, Grandma H and me for a two-mile round-trip hike up one of the best preserved pieces of inverted topography in the world. The formation of Table Mountain started ~9 million years ago as latite lava that erupted out of Sonora Pass and flowed down the river canyon of the ancestral Stanislaus River. The lava cooled, hardened and resisted erosion over time much better than the surround rocks of the canyon. Nine million years later the hard lava now stands 600' above its surroundings!
Zephyr ready to start up the trail after jumping and sitting in the muddy puddles. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool Z gets a boost up the trail from mom. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool New Melones Reservoir was at 14% of capacity this day. The lake level would rise two feet in the next two days thanks to two robust storms. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool Zephyr LOVES to hike and play in the mud. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool
I went crazy with the HDR on this lichen and moss-covered chunk of latite. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool Just as we started to make our first ascent, I noticed lots of mine tailings scattered about the road/trail.  A bit of snooping led to this mine adit.  I would highly advise against going in the unstable mess. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool A nice view of the Table Mountain.  We saw three people climbing the rock face in the middle of the photo. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool These trees were benign, but mark my word you'll likely find some poison oak on this trail in the spring.  Hard to tell this time of year with no leaves. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool
The trail zigs and zags steeply over scree and rockfall.  Water flowing off of the mountain during the rainy season and under the rocks creates an amazing microclimate for many mosses and plants. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool Moss! : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool Laura communes with an oak tree. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool Grandma H just loves nature and being with her grandkid (and maybe us too). : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool
The view from about half-way up the trail.  New Melones water level was down 313' (821') from it's elevation at full pool (1135'). : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool A really great hand sample of the Table Mountain latite.  Notice the large crystals of plagioclase. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool Hard to tell, but there was a cool little trickle of water trying to be a waterfall. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool After riding on my back for a majority of the hike, Z was finally free to roam and explore the Vernal Pools atop the mountain. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool
It's wet you say?!  Meh, my pants can handle it. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool I don't yet know enough about the ecology of the vernal pools and thin soils atop the mountain to make an informed comment.  The rocks are awesome though. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool RJH 0601 : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool The pile of trees is where the trail pops out of the mountain. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool
RJH 0608 : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool Zephyr had a great time "flying" his toy airplane into the grasses. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool We trekked over the mud and around the puddles to get a view from the eastern side of the plateau. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool RJH 0638 : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool
RJH 0643 : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool Easter edge of Table Mountain. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool RJH 0666 : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool Ok, Grandma and Z like to laugh together. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool
And Zephyr and mom like be silly together. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool RJH 0676 : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool RJH 0679 : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool This looks to be the remnants of a large rock that has weathered down to the small chunks in the middle of the moss ring.  I'm sure some of the bigger pieces were scattered by people. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool
Time to go take a group shot! : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool RJH 0695 : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool Remnants of rather large rock falls in the center of the photo.  Jointing in the rocks played a big role, I'm sure... but I wonder mining activity is also to blame? : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool RJH 0719 : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool
RJH 0722 : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool The trail back down. : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool Slime molds (?), lichen and moss on a tree?  Cool! : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool RJH 0735 : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool
RJH 0741 : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool RJH 0744 : Geology Trip, Jamestown, MJC Geology, latite, southern motherlode, table mountain, vernal pool