# **************************************************************** # ** Please acknowledge the contributors and the International ** # ** Multiproxy Paleofire Database when using these data. ** # **************************************************************** # # Site name: Slack Lake # Place: USA:Michigan # Latitude: 42.87167N # Longitude: 83.61042W # Elevation(m): 282 # Site size(ha): 19 # Investigators: Joanne Ballard, Thomas V. Lowell # # Sampling date: 02/20/2008 # Sampling device: Livingstone corer # Diameter(cm): 5 # Water depth(cm): 945 # Sample Storage: University of Cincinnati # Analysis method: Loss on Ignition (LOI) (Myrbo 2005, Dean 1974) was performed according to standard # procedure at 2 cm intervals. Samples are put in weighed and numbered crucibles and # placed in an oven at 100 degrees C overnight to dry them out. Sample and crucible are # then weighed and returned to the oven to be heated at 550 decrees C for an hour. Samples # are cooled and weighed in the crucibles. This process is repeated one more time at # 1000 degrees C. Using the differences in sample weights, the mass lost during the # 550 degrees C treatment is organic mass, and the mass lost during the 1000 degrees C # heating is carbonate mass. The mass that is not burned off is clay, silica or other # non organic, non carbonate minerals. # # Location description: Situated just inside Saginaw Lobe moraine, near Flint MI. Privately owned lake with # steep approach, deciduous vegetation, and is a lacustrine natural open # water glacial origin kettle lake. Within 1 km of the Gainey archaeological site # investigated by Donald B. Simons. # # Publications: Joanne Ballard thesis, Sept. 2009: A Lateglacial Paleofire Record for # East-central Michigan. University of Cincinnati. # # Notes: See Betty Sodder's book Michigan on fire for historical information on the Thumb Fire # and the Great Chicago Fire/Peshtigo Fire which affected IL/MI/WI. # 1 Depth (cm) 2 % LOI organic 3 % LOI carbonate 1402,72.222,5.556 1404,76.250,5.000 1406,79.412,4.412 1408,76.812,5.797 1410,78.481,5.063 1412,75.385,3.077 1414,75.000,3.750 1416,70.930,5.814 1418,68.478,3.261 1420,62.136,6.796 1422,68.000,6.000 1424,69.000,3.000 1426,60.526,4.386 1428,59.804,5.882 1430,62.000,6.000 1432,59.406,6.931 1434,59.821,4.464 1436,61.947,5.310 1438,69.474,3.158 1440,71.429,3.297 1442,71.429,3.297 1444,66.667,3.226 1446,60.577,3.846 1448,56.637,4.425 1450,50.794,3.175 1452,78.824,3.529 1454,75.610,6.098 1456,78.481,3.797 1458,76.190,4.762 1460,74.699,3.614 1462,64.894,7.447 1464,57.944,9.346 1466,52.778,7.407 1468,60.000,8.000 1470,55.319,7.447 1472,58.163,5.102 1474,68.235,5.882 1476,71.111,5.556 1478,72.632,5.263 1480,68.182,5.682 1482,67.677,7.071 1484,68.478,4.348 1486,64.706,4.902 1488,69.072,4.124 1490,64.356,5.941 1492,68.367,4.082 1494,65.625,4.167 1496,61.616,5.051 1498,, 1500,, 1502,48.696,9.565 1504,54.054,7.207 1506,52.747,5.495 1508,55.769,6.731 1510,55.856,6.306 1512,54.464,6.250 1514,60.194,5.825 1516,59.223,5.825 1518,57.000,8.000 1520,52.809,6.742 1522,52.586,3.448 1524,41.667,5.303 1526,41.379,5.172 1528,39.450,5.505 1530,33.103,6.207 1532,29.891,9.239 1534,19.277,18.474 1536,26.667,6.667 1538,33.533,6.587 1540,31.056,6.832 1542,25.253,6.566 1544,31.937,5.236 1546,40.260,4.545 1548,37.912,6.044 1550,31.937,5.759 1552,33.742,6.135 1554,43.624,5.369 1556,44.030,5.224 1558,41.818,4.242 1560,41.379,4.828 1562,47.059,4.412 1564,46.565,3.817 1566,50.000,2.679 1568,47.857,3.571 1570,44.444,4.861 1572,41.104,4.908 1574,46.429,5.000 1576,49.219,4.687 1578,50.000,3.676 1580,44.444,4.762 1582,44.966,4.027 1584,37.086,5.298 1586,30.256,5.641 1588,34.759,4.278 1590,41.975,4.938 1592,39.375,5.000 1594,45.926,5.926 1596,38.122,4.972 1598,, 1600,, 1602,40.341,6.250 1604,46.795,4.487 1606,46.809,4.255 1608,51.034,4.138 1610,50.340,4.762 1612,52.419,4.032 1614,45.882,6.471 1616,41.579,5.789 1618,46.988,5.422 1620,45.763,5.085 1622,40.323,5.914 1624,30.864,6.584 1626,29.675,7.317 1628,27.881,6.691 1630,27.536,8.213 1632,25.993,11.191 1634,35.088,6.579 1636,35.111,6.222 1638,39.024,4.878 1640,48.503,4.192 1642,41.081,5.405 1644,33.333,6.481 1646,38.021,5.208 1648,34.466,4.854 1650,29.630,6.019 1652,36.364,3.828 1654,32.273,5.000 1656,26.772,5.906 1658,26.236,6.464 1660,26.908,6.426 1662,23.881,7.463 1664,20.642,7.798 1666,17.621,7.489 1668,13.879,7.829 1670,11.176,9.412 1672,9.716,10.900 1674,10.795,9.659 1676,10.599,10.369 1678,10.000,10.909 1680,9.574,10.993 1682,9.596,11.869 1684,10.526,11.278 1686,10.194,12.379 1688,10.215,12.903 1690,10.268,13.616 1692,11.316,10.263 1694,12.171,9.539 1696,13.962,8.302 1698,, 1700,, 1702,23.077,5.594 1704,22.121,6.061 1706,16.575,8.011 1708,11.220,12.439 1710,11.275,12.745 1712,11.807,12.289 1714,11.190,12.619 1716,18.033,6.011 1718,15.222,8.899 1720,15.759,8.309 1722,15.562,6.916 1724,17.664,7.123 1726,18.362,6.215 1728,15.062,6.173 1730,17.052,6.358 1732,15.873,6.085 1734,12.342,11.392 1736,13.057,7.643 1738,14.692,7.109 1740,13.842,6.683 1742,17.367,5.882 1744,15.259,5.995 1746,12.815,6.865 1748,12.364,7.809 1750,9.259,7.778 1752,10.538,8.602 1754,9.890,9.707 1756,8.318,9.042 1758,9.333,6.667 1760,1.919,10.835 1762,1.614,17.353 1764,1.657,9.413 1766,1.671,11.456 1768,2.415,8.792 1770,1.400,13.262 1772,1.434,9.943 1774,1.307,19.237 1776,1.064,9.498 1778,1.131,8.127 1780,1.040,11.698 1782,1.654,10.008 1784,1.309,8.959 1786,2.011,11.504 1788,1.856,11.001 1790,1.954,10.036