{"text_format":"dbase-jsonl-2026-09-30","columns":[{"name":"AREA","type":"float","width":19,"decimals":11},{"name":"PERIMETER","type":"float","width":19,"decimals":11},{"name":"MAP_UNIT","type":"character","width":10},{"name":"SUR_BED","type":"character","width":254},{"name":"FORMATION","type":"character","width":254},{"name":"GROUP_","type":"character","width":254},{"name":"ROCK_CLASS","type":"character","width":254},{"name":"FOLIA","type":"character","width":254},{"name":"REL_AGE","type":"character","width":254},{"name":"COLOR","type":"character","width":254},{"name":"LITHOLOGY","type":"character","width":80},{"name":"UNIT_DESCR","type":"character","width":200},{"name":"DMU","type":"character","width":254}],"n_rows":15,"rows_kept":15,"cut":false,"deleted_skipped":0,"read_ended":"whole","bounds":"16MiB/16384/4096/first_that_fit","version":"dbase_level_three","encoding_class":"enc_single_byte","reader":"statdb_count/9"}
[1.61575000000e+006,1.22147001953e+004,"Jd","Bedrock",null,null,"Metamorphic","Bedding","Late Triassic and Early Jurassic","Gray","crystalline diabase","Diabase dikes and sills (Late Triassic and Early Jurassic); Gray, medium grained, massive, crystalline diabase","Diabase dikes and sills (Early Jurassic and Late Triassic)"]
[7.20799000000e+005,1.47085996094e+004,"Jd","Bedrock",null,null,"Metamorphic","Bedding","Late Triassic and Early Jurassic","Gray","crystalline diabase","Diabase dikes and sills (Late Triassic and Early Jurassic); Gray, medium grained, massive, crystalline diabase","Diabase dikes and sills (Early Jurassic and Late Triassic)"]
[1.40721000000e+005,7.23514013672e+003,"JTRtm","Bedrock",null,null,"Metamorphic","Bedding","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic); Variegated fine-grained hornfels with porphyroblasts",null,"hornfels with porphyroblasts","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic); Variegated fine-grained hornfels with porphyroblasts","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic)"]
[1.81005000000e+005,1.06482998047e+004,"JTRtm","Bedrock",null,null,"Metamorphic","Bedding","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic); Variegated fine-grained hornfels with porphyroblasts",null,"hornfels with porphyroblasts","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic); Variegated fine-grained hornfels with porphyroblasts","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic)"]
[1.15668000000e+006,5.18852001953e+003,"Jd","Bedrock",null,null,"Metamorphic","Bedding","Late Triassic and Early Jurassic","Gray","crystalline diabase","Diabase dikes and sills (Late Triassic and Early Jurassic); Gray, medium grained, massive, crystalline diabase","Diabase dikes and sills (Early Jurassic and Late Triassic)"]
[1.44687000000e+006,9.83428027344e+003,"JTRtm","Bedrock",null,null,"Metamorphic","Bedding","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic); Variegated fine-grained hornfels with porphyroblasts",null,"hornfels with porphyroblasts","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic); Variegated fine-grained hornfels with porphyroblasts","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic)"]
[1.52125000000e+004,5.70781982422e+002,"Jd","Bedrock",null,null,"Metamorphic","Bedding","Late Triassic and Early Jurassic","Gray","crystalline diabase","Diabase dikes and sills (Late Triassic and Early Jurassic); Gray, medium grained, massive, crystalline diabase","Diabase dikes and sills (Early Jurassic and Late Triassic)"]
[2.17867000000e+005,2.37543994141e+003,"Jd","Bedrock",null,null,"Metamorphic","Bedding","Late Triassic and Early Jurassic","Gray","crystalline diabase","Diabase dikes and sills (Late Triassic and Early Jurassic); Gray, medium grained, massive, crystalline diabase","Diabase dikes and sills (Early Jurassic and Late Triassic)"]
[2.75736992188e+004,2.46206005859e+003,"JTRtm","Bedrock",null,null,"Metamorphic","Bedding","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic); Variegated fine-grained hornfels with porphyroblasts",null,"hornfels with porphyroblasts","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic); Variegated fine-grained hornfels with porphyroblasts","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic)"]
[5.07118984375e+004,1.25554003906e+003,"Jd","Bedrock",null,null,"Metamorphic","Bedding","Late Triassic and Early Jurassic","Gray","crystalline diabase","Diabase dikes and sills (Late Triassic and Early Jurassic); Gray, medium grained, massive, crystalline diabase","Diabase dikes and sills (Early Jurassic and Late Triassic)"]
[3.53567000000e+005,2.35005004883e+003,"Jd","Bedrock",null,null,"Metamorphic","Bedding","Late Triassic and Early Jurassic","Gray","crystalline diabase","Diabase dikes and sills (Late Triassic and Early Jurassic); Gray, medium grained, massive, crystalline diabase","Diabase dikes and sills (Early Jurassic and Late Triassic)"]
[3.25654000000e+005,4.10560009766e+003,"TRbg","Bedrock","Bull Run","Chatham","Metamorphic","Bedding","Groveton Member; Gray and brown siltstone and sandy shale","Gray and brown","siltstone and sandy shale","Groveton Member; Gray and brown siltstone and sandy shale","Chatham Group Groveton Member of the Bull Run Formation (Upper Triassic)"]
[1.52631000000e+007,2.11946992188e+004,"TRbg","Bedrock","Bull Run","Chatham","Metamorphic","Bedding","Groveton Member; Gray and brown siltstone and sandy shale","Gray and brown","siltstone and sandy shale","Groveton Member; Gray and brown siltstone and sandy shale","Chatham Group Groveton Member of the Bull Run Formation (Upper Triassic)"]
[3.35587988281e+003,4.61662994385e+002,"JTRtm","Bedrock",null,null,"Metamorphic","Bedding","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic); Variegated fine-grained hornfels with porphyroblasts",null,"hornfels with porphyroblasts","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic); Variegated fine-grained hornfels with porphyroblasts","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic)"]
[1.15315000000e+004,4.95985992432e+002,"JTRtm","Bedrock",null,null,"Metamorphic","Bedding","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic); Variegated fine-grained hornfels with porphyroblasts",null,"hornfels with porphyroblasts","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic); Variegated fine-grained hornfels with porphyroblasts","Thermally metamorphosed rocks (Lower Jurassic and Upper Triassic)"]