Legend (Catalog/5abc1c24e4b081f61abdac49)

GeochronPoints (2) 31.21 VolcanicPoints (3) Volcanic vent—Known and inferred GeologicLines (4) Crest line of moraine Fissure CartographicLines (5) Lassen Volcanic National Park boundary Unit leader IsoValueLines (6) Ash from Cinder Cone—Isopach contours show thicknesses of 5, 10, 25, 50, 100, and 200 cm ContactsAndFaults (7) Contact—certain Contact—approximately located Contact—concealed Fault—certain Fault—concealed Normal fault—certain. Ball and bar on downthrown block Normal fault—concealed. Ball and bar on downthrown block Normal fault—concealed. Ball and bar on downthrown block Water boundary Map boundary OverlayPolys (8) Cinder and agglutinate cones Phreatic eruption deposit—Dacite of Bumpass Mountain MapUnitOverlayPolys (9) p17, pw2, p9, cc, pcd, pc, pfl, pk, psf, pe p2 MapUnitPolys (10) Qoa Qta adb Qoy Qtrl Qtal md36 adc Qth Qoo mdp ar bdt mdb2, mdb1 pr, rr, drr, dbl, dbc, drp, dfr, dp, dpg, dch, dmm, dcy r27 re, pe (black dots) Qty Water or Lake Qor ag abf ad Tt Qtr br2, br1 bt4, bt3, bt2, bt1 Qou Qd bp6, bp5, bp4, bp3, bp2, bp1 bb12, bb11, bb1, bb9, bb8, bb6, bb5, bb4, bb3, bb2, bb1 bs5, bs4, bs3, bs2, bs1 bcp3, bcp2, bcp1 amz m2 amd bg4, bg3, bg2, bg1 bc2, bc1 rb, rmp, rlp, rsm, rg rd3 Qto bsb bsd bsl bs72 bss1 amc dt mbg ass, msl, asp, ms47, aso Tah, Tdm ad2, adm, ads, ab Qtb brt2, brt1 mrr mrc mrb brw arr arp mrg3, mrg2, mrg1 br8 brc ac bre br25 brm aw br22 bra boc bbz bwv mbx msg bic btb mrd b18 b44 atd, atb, mt67, mtu, mt54, mtb, mt61, mt5, att, mtm mrm Tam, Tab, Tml Tad, Taw Tlv bcw mte ah bcp bcs av mtt mfp at am bnt mj bk2, bk1 brk mbc bsh bec bmc bpa bcg mgp bhc meh bo bcc bbh mce, mcj, mcr bbp bbb mc11, mc10, mc9, mc8, mc7, mc6, mc5, mc4, mc3, mc2, mc1 mcm a74 mch mc71 mcn8, mcn7, mcn6, mcn5, mcn4, mcn3, mcn2, mcn1 acl bci mr msw dhm Tac ae mhr msn ahc b11 amr abl bgv p17, w2, p2, pw2, d9, f9, sw9, p9, d4 amh agr mcf bn awp mm bsm pdh bl30 mes beb1, beb2, beb3 mee1, mee2 mtr rd, dr, db, dc, ds, dh, duh, dsc, dpl, dv, d82, dmz, rmz, rmc, rlm, bl21 mlc bl22 bcb mf1, mf2 bl35 ml18 bii bie mp1 bl2 bl20 mo ao acs Tbm Tdb mt20 bhr alg Tmsr Tmc mb abm bcr a22 acc ap bbf bct aa a16 msm mhl rsf, psf rk, pk cc, rcf, pce, rce, pcd, rcd, rcc, rcb, pc, rca pfl, dl Qf rkr Qc Qsh Qwb Qsl Qcl Qsj Qwh Qs82 ht h