Peter Schiffman

Old school geologist; community folk roots music radio presenter; dog lover; Grampaw

[Peter Schiffman @SchiffmanPeter]

@phaneritic @sfchronicle Other than on its flanks, where bedrock may be reached by digging a 1-2 m trench, trenching in the Napa Valley will tell you little about terroir, other than when the river flooded, it randomly deposited cobbles of Sonoma Volcanics, Franciscan metasandstone, and serpentinite.

[Peter Schiffman @SchiffmanPeter]

@RobbieFulks Didn’t hold you back from commenting on Nickel Creek last night at the F&S. Fabulous show incidentally….

[Peter Schiffman @SchiffmanPeter]

@Earth_Sci_Richy @DurUniEarthSci https://t.co/TL0D0tSLVo

[Peter Schiffman @SchiffmanPeter]

@rshindell @NewYorker @CorreoOficialSA Good luck catching up.

[Peter Schiffman @SchiffmanPeter]

@_Sackung Super subduction zone ophiolites don’t need to be obducted. They form in the overriding plate following subduction initiation and trench roll back.

[Peter Schiffman @SchiffmanPeter]

https://t.co/xeCJpv1skT.

[Peter Schiffman @SchiffmanPeter]

@CorsIAQ @ucdavis No Aggie Villa

[Peter Schiffman @SchiffmanPeter]

@RobbCA I can sympathize, even empathize. Seems like one day you are a 60+ miles/week, 3 hour marathoner. Then you barely can jog 10 miles/week at a pace not much faster than a brisk walk. Aging is cruel.

[Peter Schiffman @SchiffmanPeter]

@iseehawksinla So glad not have to deal with those emails any longer…

[Peter Schiffman @SchiffmanPeter]

@iseehawksinla If you eat it and get sick, you are in the doctor’s office ….

[Peter Schiffman @SchiffmanPeter]

@Helen_Lindley Just found your playlist. Thanks.

[Peter Schiffman @SchiffmanPeter]

@iseehawksinla It’s all about the hot dogs

[Peter Schiffman @SchiffmanPeter]

@iseehawksinla And as a dad, did you impose a “tariff” on that haul? Payable in snickers and pb cups, perhaps?

[Peter Schiffman @SchiffmanPeter]

@e8chin The UCD probe lab is very user friendly and into stage scans.

https://t.co/WSIiIkxVdh

[Peter Schiffman @SchiffmanPeter]

@KeepItRheol @TheNobleGasbag @FaithfullJohn Hi Christie. Have you seen this?

https://t.co/VimEcMxKYJ

[Peter Schiffman @SchiffmanPeter]

@TheNobleGasbag @FaithfullJohn Barnes and O’Neil (1969) and Wenner and Taylor (1974) presented stable isotopic evidence that serpentinization by meteoric waters was an active process on land.

[Peter Schiffman @SchiffmanPeter]

@CrookedJades She and Kate Wolf were so important in creating the sounds and textures of what we now call California Americana

[Peter Schiffman @SchiffmanPeter]

@srmulcahy Nice doodles. I have some of Louise Kellogg’s.

[Peter Schiffman @SchiffmanPeter]

@JohnnyCampbel1 Lots of good walking in the Berkeley hills