![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s187cb/html/s-1-87-cb.nav.150px.jpg)
87001
(S-1-87-CB)
01/09/87 - 01/18/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/a/a187bh/html/a-1-87-bh.nav.150px.jpg)
87002
(A-1-87-BH)
01/20/87 - 01/22/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s287cb/html/s-2-87-cb.nav.150px.jpg)
87003
(S-2-87-CB)
01/21/87 - 01/29/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/f/f187se/html/f-1-87-se.nav.150px.jpg)
87004
(F-1-87-SE)
02/02/87 - 02/27/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/o/o8187gu/html/o-81-87-gu.nav.150px.jpg)
87005
(O-81-87-GU)
02/05/87 - 02/15/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s187af/html/s-1-87-af.nav.150px.jpg)
87006
(S-1-87-AF)
02/22/87 - 03/21/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/a/a187hw/html/a-1-87-hw.nav.150px.jpg)
87007
(A-1-87-HW)
02/27/87 - 03/12/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/f/f287mc/html/f-2-87-mc.nav.150px.jpg)
87008
(F-2-87-MC)
03/01/87 - 03/26/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s287af/html/s-2-87-af.nav.150px.jpg)
87009
(S-2-87-AF)
03/26/87 - 04/25/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/f/f387ne/html/f-3-87-ne.nav.150px.jpg)
87010
(F-3-87-NE)
03/28/87 - 04/25/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/m/m187bh/html/m-1-87-bh.nav.150px.jpg)
87011
(M-1-87-BH)
04/08/87 - 04/10/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/m/m287bh/html/m-2-87-bh.nav.150px.jpg)
87012
(M-2-87-BH)
04/15/87 - 04/17/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/r/r187ps/html/r-1-87-ps.nav.150px.jpg)
rdbt87-1
(R-1-87-PS)
04/17/87 - 04/26/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s187se/html/s-1-87-se.nav.150px.jpg)
87014
(S-1-87-SE)
04/17/87 - 05/01/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/f/f487mc/html/f-4-87-mc.nav.150px.jpg)
87015
(F-4-87-MC)
04/27/87 - 05/08/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/a/a187la/html/a-1-87-la.nav.150px.jpg)
87016
(A-1-87-LA)
05/03/87 - 05/07/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s187sc/html/s-1-87-sc.nav.150px.jpg)
87017
(S-1-87-SC)
05/05/87 - 05/09/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/f/f587ec/html/f-5-87-ec.nav.150px.jpg)
87018
(F-5-87-EC)
05/09/87 - 05/28/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s387af/html/s-3-87-af.nav.150px.jpg)
87019
(S-3-87-AF)
05/12/87 - 06/11/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/h/h187bh/html/h-1-87-bh.nav.150px.jpg)
87020
(H-1-87-BH)
05/12/87 - 05/12/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/p/p187mc/html/p-1-87-mc.nav.150px.jpg)
powl
(P-1-87-MC)
05/28/87 - 06/03/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/p/p2187ma/html/p-21-87-ma.nav.150px.jpg)
87021
(P-21-87-MA)
05/28/87 - 06/03/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s487af/html/s-4-87-af.nav.150px.jpg)
87022
(S-4-87-AF)
06/12/87 - 07/17/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/a/a2187la/html/a-21-87-la.nav.150px.jpg)
acad87-2, lg1
(A-21-87-LA)
06/14/87 - 06/26/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/n/n187bh/html/n-1-87-bh.nav.150px.jpg)
87024
(N-1-87-BH)
06/16/87 - 07/21/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/a/a287la/html/a-2-87-la.nav.150px.jpg)
87025
(A-2-87-LA)
06/20/87 - 06/22/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/a/a387la/html/a-3-87-la.nav.150px.jpg)
87026
(A-3-87-LA)
06/23/87 - 06/26/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/d/d187ch/html/d-1-87-ch.nav.150px.jpg)
87027
(D-1-87-CH)
07/06/87 - 07/17/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/d/d287md/html/d-2-87-md.nav.150px.jpg)
87028
(D-2-87-MD)
07/22/87 - 08/01/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s587af/html/s-5-87-af.nav.150px.jpg)
87029
(S-5-87-AF)
07/22/87 - 08/20/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/e/e187gm/html/e-1-87-gm.nav.150px.jpg)
87030
(E-1-87-GM)
07/08/87 - 08/10/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/e/e187gu/html/e-1-87-gu.nav.150px.jpg)
endv
(E-1-87-GU)
07/28/87 - 08/10/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/a/a687sc/html/a-6-87-sc.nav.150px.jpg)
a-6-87-sc
07/28/87 - 08/01/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/n/n387bh/html/n-3-87-bh.nav.150px.jpg)
87032
(N-3-87-BH)
07/29/87 - 08/07/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/k/k187na/html/k-1-87-na.nav.150px.jpg)
knor130-1
(K-1-87-NA)
08/02/87 - 08/20/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/m/m187gm/html/m-1-87-gm.nav.150px.jpg)
mrac
(M-1-87-GM)
08/15/87 - 08/16/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s687af/html/s-6-87-af.nav.150px.jpg)
87035
(S-6-87-AF)
08/26/87 - 09/20/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/m/m187gu/html/m-1-87-gu.nav.150px.jpg)
87036
(M-1-87-GU)
09/03/87 - 09/05/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/n/n187lm/html/n-1-87-lm.nav.150px.jpg)
87037
(N-1-87-LM)
09/05/87 - 09/13/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/a/a287ca/html/a-2-87-ca.nav.150px.jpg)
87038
(A-2-87-CA)
09/14/87 - 09/17/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/b/b1287la/html/b-12-87-la.nav.150px.jpg)
87039
(B-12-87-LA)
09/15/87 - 09/24/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s787af/html/s-7-87-af.nav.150px.jpg)
87040
(S-7-87-AF)
09/24/87 - 10/20/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/b/b3487la/html/b-34-87-la.nav.150px.jpg)
87041
(B-34-87-LA)
09/30/87 - 10/12/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s887af/html/s-8-87-af.nav.150px.jpg)
87042
(S-8-87-AF)
10/22/87 - 11/04/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/c/c187fl/html/c-1-87-fl.nav.150px.jpg)
cpld
(C-1-87-FL)
10/26/87 - 11/15/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/a/a387ca/html/a-3-87-ca.nav.150px.jpg)
87044
(A-3-87-CA)
11/01/87 - 11/03/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s987cb/html/s-9-87-cb.nav.150px.jpg)
87045
(S-9-87-CB)
12/04/87 - 12/14/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/f/f187ci/html/f-1-87-ci.nav.150px.jpg)
87046
(F-1-87-CI)
12/08/87 - 12/14/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/s/s1087sm/html/s-10-87-sm.nav.150px.jpg)
87047
(S-10-87-SM)
12/16/87 - 01/26/88
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/p/p4987gk/html/p-49-87-gk.nav.150px.jpg)
87049
(P-49-87-GK)
07/01/87 - 07/15/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/m/m5087my/html/m-50-87-my.nav.150px.jpg)
87050
(M-50-87-MY)
07/10/87 - 07/16/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/c/c5287my/html/c-52-87-my.nav.150px.jpg)
87052
(C-52-87-MY)
01/29/87 - 01/29/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/u/u5387my/html/u-53-87-my.nav.150px.jpg)
87053
(U-53-87-MY)
04/30/87 - 04/30/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/d/d5487my/html/d-54-87-my.nav.150px.jpg)
87054
(D-54-87-MY)
01/29/87 - 01/29/87
|
![thumbnail map](https://webarchive.library.unt.edu/eot2008/20090510103148im_/http://walrus.wr.usgs.gov/infobank/d/d5587my/html/d-55-87-my.nav.150px.jpg)
87055
(D-55-87-MY)
01/29/87 - 01/29/87
|