{"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":"MEMBER","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":"MINERAL","type":"character","width":254},{"name":"COLOR","type":"character","width":254},{"name":"LITHOLOGY","type":"character","width":80},{"name":"DMU","type":"character","width":254}],"n_rows":10,"rows_kept":10,"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"}
[3.51869000000e+006,1.07510000000e+004,"CZi","Bedrock","Ijamsville Phyllite",null,"Sedimentary","Bedding","Lower Cambrian? and Ediacaran?","Phyllite, slate, and phyllonite containing quartz","Blue, purple, and green","Phyllite, slate, and phyllonite containing pods and folded stringers of white ve","Ijamsville Phyllite (Lower Cambrian? and Neoproterozoic?)"]
[3.84053000000e+006,1.66420996094e+004,"Car","Bedrock","Araby",null,"Metasedimentary","Bedding","Middle and Lower Cambrian","Metasiltstone","Light-brownish gray","Metasiltstone","Araby Formation (Middle and Lower Cambrian)"]
[4.76003000000e+005,1.67530000000e+004,"Cfrs","Bedrock","Frederick","Rocky Springs Station","Sedimentary","Bedding","Upper Cambrian","Dolomitic limestone, polymictic breccia, sandstone, and shale","Dark-gray","Dolomitic limestone, polymictic breccia, sandstone, and shale","Frederick Formation (Upper Cambrian) Rocky Springs Station Member (2)"]
[8.17274000000e+005,7.41025976563e+003,"Cfr","Bedrock","Frederick","Rocky Springs Station","Sedimentary","Bedding","Upper Cambrian","Dolomitic limestone, polymictic breccia, sandstone, and shale","Dark-gray","Dolomitic limestone, polymictic breccia, sandstone, and shale","Frederick Formation (Upper Cambrian) Rocky Springs Station Member (1)"]
[9.03630000000e+005,5.42087011719e+003,"Car","Bedrock","Araby",null,"Metasedimentary","Bedding","Middle and Lower Cambrian","Metasiltstone","Light-brownish gray","Metasiltstone","Araby Formation (Middle and Lower Cambrian)"]
[3.90464000000e+006,1.18695996094e+004,"Cfr","Bedrock","Frederick","Rocky Springs Station","Sedimentary","Bedding","Upper Cambrian","Dolomitic limestone, polymictic breccia, sandstone, and shale","Dark-gray","Dolomitic limestone, polymictic breccia, sandstone, and shale","Frederick Formation (Upper Cambrian) Rocky Springs Station Member (1)"]
[1.86899000000e+006,1.04972001953e+004,"Cfa","Bedrock","Frederick","Adamstown","Sedimentary","Bedding","Upper Cambrian","Limestone and dolomite","Dark-gray","Limestone and dolomite","Frederick Formation (Upper Cambrian) Adamstown Member"]
[1.07749000000e+006,8.65334960938e+003,"Cfl","Bedrock","Frederick","Lime Kiln","Sedimentary","Bedding","Upper Cambrian","Limestone and calcareous shale","Dark-gray","Limestone and calcareous shale","Frederick Formation (Upper Cambrian) Lime Kiln Member"]
[1.32804000000e+006,2.81603007813e+004,"Cfr","Bedrock","Frederick","Rocky Springs Station","Sedimentary","Bedding","Upper Cambrian","Dolomitic limestone, polymictic breccia, sandstone, and shale","Dark-gray","Dolomitic limestone, polymictic breccia, sandstone, and shale","Frederick Formation (Upper Cambrian) Rocky Springs Station Member (1)"]
[4.30900000000e+005,1.29037998047e+004,"Cfrs","Bedrock","Frederick","Rocky Springs Station","Sedimentary","Bedding","Upper Cambrian","Dolomitic limestone, polymictic breccia, sandstone, and shale","Dark-gray","Dolomitic limestone, polymictic breccia, sandstone, and shale","Frederick Formation (Upper Cambrian) Rocky Springs Station Member (2)"]