The Buttle Lake Camp is a major Paleozoic volcanogenic massive sulphide district in which the relationships between massive sulphide mineralization and associated volcanism are best explained if the ore deposits and associated lithologic units formed in a rift basin generated by rifting in an island arc system. This setting accounts for the marked linear distribution of the massive sulphide bodies, and the presence and distribution of volcanic products from four distinct source areas: a volcanic arc region, a back-arc (or intra-arc) rifting region, and two seamount areas. These interpretations were achieved largely through detailed mapping (1: 2400) of the Price Hillside and the relogging of pertinent drill core. Geology of the Buttle Lake Camp consists of newly proposed, four lowermost formations of the Paleozoic Sicker Group in the Buttle Lake uplift (in order of decreasing age): (1) the Price Formation, a thick sequence of basaltic andesite flows and related breccias; (2) the massive sulphide-bearing Myra Formation, consisting of mainly volcanic and volcaniclastic units; (3) the Thelwood Formations bedded sequence of siliceous tuffaceous sediments, subaqueous pyroclastic deposits and mafic sills; and (4) the Flower Ridge Formation, largely comprising coarse mafic pyroclastic deposits. Significant units within the Myra Formation are the lowermost, largely felsic H-W Horizon which hosts the large H-W deposit; the Lynx-Myra-Price Horizon, which contains two massive sulphide mineralized felsic volcanic units; the ultramafic G-Flow unit; and the uppermost, basaltic Upper Mafic unit. Zircon U-Pb dating yielded a Late Devonian age of 370 Ma for the Myra Formation. Volcanic units in the Price and Myra Formations are grouped into five volcanic series: two mafic to intermediate volcanic series, two felsic volcanic series, and an ultramafic to mafic volcanic series. These volcanic series are the result of at least three distinct and partly contemporaneous magmatic lineages. Source region for the ultramafic to intermediate parental magmas was an upper mantle peridotite variably enriched in large ion lithophile elements but depleted in high field strength elements (relative to N-type MORB). The felsic volcanic series were generated from two distinct sources. One series is from evolved andesitic magma whereas the other is from magma formed by partial melting of lower crustal material.' The Price and Myra Formations represent a general sequence of repeated events comprising: mafic to intermediate arc volcanism; rifting and sulphide mineralization; felsic arc.volcanism; ultramafic to mafic rift volcanism; and volcanogenic sedimentation. The sequence was repeated twice and formed two mineralized horizons (H-W and Lynx-Myra-Price). The Thelwood and Flower Ridge Formations indicate a major change in depositional style and environment from the two underlying units. The Thelwood Formation is a sediment-sill complex underlying mafic volcanic rocks of the Flower Ridge Formation. / Science, Faculty of / Earth, Ocean and Atmospheric Sciences, Department of / Graduate

Syftet med studien är att utforskar vad stolphålen i ”Buttlekrigaren” indikerar utifrån hur de förhåller sig till varandra, till andra konstruktioner i graven samt till den övriga gravkontexten. Ytterligare har de omkringliggande lämningar i Buttle Änge samt de källkritiska aspekterna av dokumentation av stolphål beaktas. Materialet avgränsas till Buttle Änge och grävningarna sedan 2009. Analysen av materialet har genomförts utifrån ett kronologiskt och rumsligt perspektiv samt via tolkningar och definitioner av konstruktionselement av gravar; rituella företeelser och minnen kopplade till gravar; samt utifrån källkritiska aspekter över metodik och tolkning. Resultatet indikerar att stolphålen i ”Buttlekrigarens grav” var en del av begravningsritualen och utgjordes av en eller flera konstruktioner som var uppförda tidigare eller samtida med primärgraven. Graven har successivt förändrats jämte bruket av den och området Buttle Änge samtidigt som de ursprungliga avgränsningarna och användningsområden har behållits. Å andra sidan är stolphål enklare att tolka men svårare att fastställa. / The aim of this study is to explore what the postholes in the “Buttlewarrior’s grav” indicate based on how they relate to each other, to other constructions in the grave and to the rest of the grave context. Additionally, the surrounding remains of Buttle Änge, and a source-critical aspect of the documentation of postholes has been taken in consideration. The material is delimited to the area of Buttle Änge and to the excavation conducted since 2009. The study applies a chronological and spatial perspective and analyses the material though interpretations and definitions of construction parts of graves; ritual aspects and memories connected to graves; and source-critical aspects of methodology and interpretation. The results shows that the postholes in the “Buttlewarrior’s grave” were a part of the burial ritual and consisted of one or a few constructions erected later or contemporary with the primary grave. The grave has gradually changed along with the use of it and the area of Buttle Änge, while the original boundaries and areas of use have been preserved. On the other hand, postholes are easier to interpret but more difficult to verify.

In the summer of 1964 a study was carried out on the impounded Buttle and Lower Campbell Lakes located on Vancouver Island, British Columbia. An attempt was made to determine the effects of increased water level fluctuation on the limnology, particularly the bottom fauna, in areas with different substrate types. All data from two pre-impoundment studies were examined, and additional sampling carried out to provide a basis for comparison. In addition, several stations were chosen in each lake according to specific substrate types. These different bottom conditions were formed from the combined effects of erosion by water level fluctuation and wave action, over areas where different methods of pre-impoundment clearing of vegetation had been employed. The stations chosen were the shallow onshore areas which were exposed to the air during the winter months of minimum water level, the unexposed area immediately below the minimum drawdown level, and the pre-impoundment littoral zones in each study lake. A single pre-impoundment river channel station was located in Buttle Lake. In addition to bottom dredgings, funnel traps and nocturnal surface tows were used to sample the emerging insect fauna from each station. The total seasonal chironomid catch indicated significantly different total emergence between the several stations sampled. The pre-impoundment river station in Buttle Lake produced the highest total chironomid catch. Among the other stations the unexposed area immediately below the drawdown level was most productive. In Buttle Lake where the greatest seasonal fluctuation occurred and where the completely cleared littoral area was least protected from wave action, the total seasonal emergence over the exposed littoral area was very low. But in Lower Campbell Lake which received a much smaller seasonal water level fluctuation, total emergence was much higher over the exposed littoral. This area was cleared completely in this lake and the irregular shoreline afforded considerable protection from wind action. An inverted bathymetric distribution of the fauna was apparent with the greatest concentration occurring immediately below the drawdown limit in the unexposed littoral zone. The effects of water level changes were therefore considered the most important single factors influencing the bottom fauna distribution in each lake. / Science, Faculty of / Zoology, Department of / Graduate

Buttle Änge and Nygårds has been excavated by Uppsala University, Campus Gotland and also by Högskolan on Gotland since year 2009 and by Gothenburg University year 2009 and 2013. During the 20 excavations that has taken place there has been 112 glass beads found. They were found by the picture stones, in graves, in and around the stone foundation houses. The beads from the picture stones can be interpreted as grave deposits and the ones found in a cremation grave could have been part of a bead necklace combined with a pendant which belonged to a girl aged 0-14. The beads by the stone foundation houses had a larger concentration of beads in its three houses compared to Vallhagar which had the same number of beads found over 20 house foundations. In close connection to the stone foundation houses were glass mosaic fragments found that could have been used to make beads or could have been residuals from the beadmaking process from another place with productions of glass beads. / Buttle Änge och Nygårds har sedan 2009 undersökts genom utgrävningar från Uppsala universitet, Campus Gotland men även med en utgrävning år 2009 av Högskolan på Gotland och av Göteborgsuniversitet år 2009 och 2013. Under de 10 utgrävningar som skett på platsen har det påträffats 112 pärlor av glas. Dessa påträffades vid bildstenar, i gravar, i och runtomkring stengrundshus. Pärlorna vid bildstenarna kan tolkas som gravdepositioner och de i en brandgrav kan ha varit en del av ett pärlgarnityr tillsammans med ett hängsmycke som kan ha tillhört en flicka i åldern 0–14. Pärlorna vid stengrundshusen hade en större koncentration av pärlor i sina tre hus jämfört med Vallhagar som hade lika många påträffade från över 20 hus. I anslutning till stengrundshusen påträffades även fragment av glasmosaik som kan ha använts för att skapa pärlor eller varit tillverkningsspill från en annan hantverksplats för glaspärlor.

The Viking age of Gotland has been subject to extensive studies. Research often addresses treasures, highly monetary valued objects, and changes in religion. In contrast, research on natural objects as fossils have received little attention. This bachelor’s thesis seeks to understand the usage of fossils in the Viking age of Gotland. With quantitative and qualitative analysis of fossils, this material shows us that people made elaborate choices in every step of utilization and with high probably created meaning through them. This study demonstrates that fossils are a heterogeneous archaeological material with capability to show us complementary view of the people who used them.